LOOP SK05 Pro MAO#

Specifications
Introduction
Torch in use
Build quality
LED, bezel, lens, reflector and beam
Size and comparison
User interface
Batteries and charging
Powerbank
Performance
Beamshots
Conclusion
Price
Product page

Specifications#

Brand/model	LOOP SK05 Pro MAO
LED	Spotlight (Luminus SFT25R), Floodlight (3*Luminus SST25), RGB Sidelight
Maximum lumens	3,060 lm
Maximum beam intensity	41,000 cd
Maximum throw	405 m
Battery	2*18650 3.7V Li-ion
Onboard charging	Yes (USB-C)
Powerbank	Yes (USB-C)
Material	Aluminium
Modes	Spotlight (4), Floodlight (4)
Blinkies	Strobe, SOS
Reflector	Smooth (Spotlight), TIR (Floodlight)
Waterproof	IP68
Review date	July 2025

Introduction#

The LOOP SK05 Pro MAO is an EDC torch with a spotlight, a floodlight and a sidelight. It features a Micro-Arc Oxidation finish. The batteries can be recharged or replaced. And it has built-in USB-C fast charging with a powerbank feature.

It can be controlled a rotary switch and a button.

This high performance version comes with a Luminus SFT25R emitter and three Luminus SST25 emitters.

Here is a video review:

LOOP kindly sent this torch for review. I have not been paid for this review nor have I held back my opinions of this torch.

Packaging#

The LOOP SK05 Pro MAO comes inside a white box with LOOP branding.

The following was included in the box:

LOOP SK05 Pro MAO.
2*LOOP 18650 3.6V Li-ion 4000mAh cells.
USB-C to USB-C charging cable.
Pocket clip with screws and a screwdriver.
User manual.

User Manual#

Torch in use#

The LOOP SK05 Pro MAO feels really nice to hold. I love the texture!

It looks like it has been designed with right-handed people in mind.

The rotary ring and the button are a lot of fun to play with!

There are two magnets in the tail to allow the torch to be used as a work light. It might topple over due to the weight of the torch if knocked.

The torch can easily tail stand.

The torch has a lanyard hole and two screw holes for a pocket clip.

The battery compartment has a lock that can be moved up and a button to press.

Build quality#

The LOOP SK05 Pro MAO is made of aluminium and it has a micro-arc oxidation finish.

The rotary ring gives a satisfying click when moving it.

The USB-C cover has been securely screwed into place.

The springs in the battery compartment are a bit too short to allow shorter unprotected flat top 18650 cells to work.

Overall, the build quality looks excellent.

LED, bezel, lens, reflector and beam#

The LOOP SK05 Pro MAO has a Spotlight with one cool white Luminus SFT25R, a Floodlight with three cool white Luminus SST25 emitters, and an RGB Sidelight.

The Floodlight has a TIR optic without glass in front of it.

The Spotlight has a glass lens with an anti-reflective coating pressed against a smooth reflector. The reflector is centered with a gasket around the SFT25R.

There is a blue glow-in-the-dark gasket around the floodlight.

CCT, CRI, and duv#

I have taken Correlated Colour Temperature (CCT) and Colour Rendering Index (CRI, RA of R1-R8) measurements with the torch positioned one metre away from an Opple Light Master Pro III (G3). Turbo (spotlight) was measured at 1.2 metres.

The CCT is around 5300K, the CRI is around 67 and the Delta u, v is positive (slightly green) on lower modes and closer to pure white on Turbo for the floodlight.

The CCT is around 5700K, the CRI is around 64 and the Delta u, v is positive (green) for the spootlight.

The beam produced by the floodlight has a wide intense white hotspot that blends smoothly into a slightly purple spill. The TIR optic helps focus the beam without creating a sharp edge.

The beam produced by the spotlight has a narrow intense white hotspot surrounded by small corona with a hint of green and a wide spill. The smooth reflector creates a sharp edge around the spill.

LED	Mode	CCT (K)	CRI (Ra)	x	y	Duv
Floodlight	Low	5184	66.5	0.3410	0.3629	0.0072
Floodlight	Med	5253	67.1	0.3389	0.3588	0.0061
Floodlight	High	5336	68.0	0.3366	0.3538	0.0046
Floodlight	Turbo	5464	69.1	0.3333	0.3471	0.0027
Spotlight	Low	5485	61.9	0.3329	0.3668	0.0124
Spotlight	Med	5628	63.2	0.3293	0.3595	0.0105
Spotlight	High	6024	64.3	0.3205	0.3472	0.0086
Spotlight	Turbo	6004	68.2	0.3215	0.3389	0.0039

Calculate Duv from CIE 1931 xy coordinates

Dimensions and size comparison#

Dimensions#

I took the following measurements using a digital caliper.

Measurement	Unit (mm)
Length	106.18
Height	24.62
Width	48.70

Weight#

I took the following measurements using a digital scale.

Weight	Unit (g)
Torch	132.97
Batteries	99.89
Torch with batteries	232.86

Size comparison with its competition#

From left to right: LOOP SK05 Pro MAO, LOOP SK05 Pro, Acebeam M2

From left to right: LOOP SK05 Pro MAO, Cyansky P25 V2.0, Wuben X1, Wurkkos TS10

From left to right: LOOP SK05 Pro MAO, Cyansky P25 V2.0, Wuben X1

The MAO finish of the LOOP SK05 Pro MAO looks similar the the Cyansky P25 V2.0.

User interface#

The LOOP SK05 Pro MAO has a rotary switch with a button in the middle.

The rotary switch can be used to select:

Lock
Floodlight
Spotlight
Sidelight

The button can be pressed to turn the light on and off, adjust the brightness, and change modes.

There are three modes in the main cycle group for the floodlight and the spotlight: Low, Med and High.

I recommend reading the user manual for more details about the user interface.

Mode memory#

Low, Med and High are memorised for the spotlight and the floodlight. If you turn the light off and on while using Turbo then it will change to the last used mode (Low, Med or High).

The last used mode for the sidelight is memorised.

The brightness, colour and speed of each of the sidelight modes are also memorised.

The brightness level is synced when switching between spotlight and floodlight while in Turbo mode. It is not synced when using Low, Med or High.

Strobe#

Both the spotlight and the floodlight turn on when using Strobe and SOS modes.

Strobe appears to have a constant frequency.

Strobe, SOS

I measured Strobe and SOS with a Zoyi ZT-701 oscilloscope.

Battery level indicator#

The sidelight acts as battery level indicator. See the user manual for more info.

Low voltage protection#

There is low voltage protection. The light turns off around 2.98V.

I tested low voltage protection by connecting the driver of the torch to a bench power supply and then by lowering the voltage from 4.2V to 0V.

What I like about the UI#

I like the ergonomics of the rotary switch and button.
The sidelight modes are memorised.
Shortcut to Turbo from off (two clicks in floodlight or spotlight mode).
Shortcut to Strobe from off (three clicks in floodlight or spotlight mode).
Shortcut to Police flash from off (three clicks in sidelight mode).

What could be improved#

A Moonlight mode of 1 lumen would be nice.
The light remains off while rotating the dial but I wish that the battery status indicator remained off too.

Batteries and charging#

Battery#

The LOOP SK05 Pro MAO comes with two protected button top LOOP 18650 3.6V Li-ion 4000mAh cells. The cells arrived with a voltage of 3.99V.

The cells are connected in parallel and they can either be recharged in the torch or replaced by unlocking the battery compartment.

The cells were isolated with a piece of plastic to prevent accidentally turning the torch on.

I tried the following cells:

Cell	Top	Compatible?	Comment
LOOP 18650 3.6V Li-ion 4000mAh	Button	Yes
Sanyo NCR18650GA 3.7V Li-ion 3450mAh	Flat	No	Too short.

Charging#

The LOOP SK05 Pro MAO has built-in USB-C charging.

It supports USB-C PD and USB-C QC.

Power supply: PinePower Desktop USB-C
USB Meter: ChargerLAB Power-Z KM003C
Room temperature: 13 C

It took 3 hours 20 minutes to charge the cells from 3.22V to 4.12V at a rate of 12V/1.6A.

The sidelight acts as a charging status indicator.

Status	Sidelight	Battery level
Fully Charged	Solid blue	100%
Charging	Purple scrolling forward	> 95%
Charging	Red scrolling forward	0 - 95%

The charging status indicator can be turned off by pressing the button.

Powerbank#

The torch can be used as a powerbank with 20W output.

The sidelight acts as a discharging status indicator.

Status	Sidelight
Discharging	Blue scrolling backward

The discharging status indicator can be turned off while charging a device by pressing the button.

Power supply compatibility#

I tried the following power supplies with the built-in USB-C charger:

Power supply	USB Type	Protocol	Does it charge?
Apple 61W Power Adapter	USB-C	PD	Yes
Google Pixel Power Adapter	USB-C	PD	Yes
PinePower Desktop	USB-C	PD	Yes
PinePower Desktop	USB-A	QC	Yes
PinePower Desktop	USB-A		Yes

USB-C to USB-C charging works.

Performance#

Specifications from the product page:

6500K (1* Luminus SFT25R Spotlight, 3* Luminus SST25 Floodlight)

Spotlight	Turbo	High	Med	Low
Output (lumens)	1,300 + 600 + 40	600 + 40	220	40
Runtime	40s + 3h + 30min	3h 30min + 30min	11h 30min	58h
Beam Distance (metres)	405
Beam Intensity (cd)	41,000

Floodlight	Turbo	High	Med	Low
Output (lumens)	3,060 + 950 + 50	950 + 50	350	50
Runtime	40s + 2h 30min + 30min	3h + 30min	11h	52h
Beam Distance (metres)	200
Beam Intensity (cd)	10,000

Sidelight	On
Runtime	>100h

I performed tests while using the included cells.

Lumen measurements#

I used a bench power supply to measure the current at turn on for most modes.

LED	Mode	Amps at start	Specs	3umens @turn on	Lumens @30 sec	Lumens @10 min
Spotlight	Low	0.11 A	40	46	45	45
Spotlight	Med	0.49 A	220	278	273	272
Spotlight	High	1.60 A	600 + 40	724	709	690
Spotlight	Turbo	5.11 A	1,300 + 600 + 40	1,530	1,357	686
Floodlight	Low	0.13 A	50	59	59	59
Floodlight	Med	0.55 A	350	336	333	331
Floodlight	High	1.69 A	950 + 50	889	876	861
Floodlight	Turbo	5.70 A	3,060 + 950 + 50	2,336	2,067	862
Both	Turbo	8.60 A		2,964	2,773	862

The floodlight on Turbo fell short of the 3,060 lumens claim at 30 seconds.

Momentary Turbo, with both the floodlight and the spotlight turned on, reached 2,964 lumens at turn on, 2,067 lumens at 30 seconds, and then it dropped to 667 lumens after 1 minute.

Standby drain#

110 µA

Runtime graphs#

I used my own DIY lumen tube with a TSL2591 sensor and forked bmengineer’s project RuTiTe to record runtimes.

Note: Lumen measurements may be off by 10% with my DIY lumen tube.

The room temperature was approximately 13 C.

Runtime#

Here is a summary of the runtime results:

LED	Mode	User manual	Runtime	Turn off	Final voltage
Spotlight	Turbo	40s + 3h + 30min	3h 50min 33s	3h 50min 33s	3.21, 3.21
Spotlight	High	3h 30min + 30min	2h 35min 57s	33h 27min 12s	3.06, 3.06
Spotlight	Med	11h 30min	13h 21min 50s	13h 21min 50s	3.15, 3.15
Spotlight	Low	58h	10min+	10min+
Floodlight	Turbo	40s + 2h 30min + 30min	3h 33min 45s	3h 33min 45s	3.22, 3.22
Floodlight	High	3h 30min	2h 35min 24s	25h 56min 8s	3.06, 3.06
Floodlight	Med	11h	9h 12min 28s	9h 12min 28s	3.39, 3.39
Floodlight	Low	52h	10min+	10min+

“Runtime” is the time until the output reduces to 10% of the output at 30 seconds (as per the ANSI/PLATO FL1 2019 Standard).

“Turn off” is the time until my DIY lumen tube no longer detects more than one lumen.

“+” indicates that the light remained on after recording had stopped.

Runtime results for Turbo, and spotlight (Med), were better than expected.

High went hard initially but then it dropped significantly in output after a few hours and the torch continued to run for over 24 hours. It would be better if it stepped down to Med first.

Med looks pretty good if you want to strike a balance between maximising a greater output for a longer time. It managed to trigger low voltage protection and cut out rather than continue for over 24 hours. The torch was able to be turned back on.

I am pretty happy with those straight lines in the runtime graphs.

Throw#

I took lux measurements with a UNI-T UT383BT at 30 seconds. Each mode was measured at five metres.

LED	Mode	Specs (cd)	Specs (m)	Candela measured (cd)	Distance (m)
Floodlight	Low			150	24
Floodlight	Med			1,325	72
Floodlight	High			3,875	124
Floodlight	Turbo	10,000	200	9,425	194
Spotlight	Low			1,575	79
Spotlight	Med			10,200	201
Spotlight	High			27,100	329
Spotlight	Turbo	41,000	405	52,325	457