[Review]

Sofirn SP40 flashlight from Banggood
Link – click here
What do we get in the box? The flashlight has a built-in charger (supplied through the micro-USB port, cable is included) for 18650 or 18350 cells – for the smaller ones there is a shorter battery tube, a clip, two O-rings and of course a headband. And paper instruction.
All elements are very well made – this headlamp does not stand out from more expensive competition.
With the 18650 battery Sofirn SP40 produce quite wide light beam (the Cree XP-L diode is on board), we have three modes of continuous lighting: low, mid, high and turbo (to activate it by double-clicking). There is a memory function of the last used mode (except turbo), there is also reverse polarity protection and ATR (Advanced Temperature Regulation) thermal protection. ATR will operate when the controller temperature reaches / exceeds 55C – the flashlight will switch to a lower lighting mode.
In the manual I found that flashlight without a battery can also light beams. Well, I’ve checked – thats the true. Unscrewed the cap, unscrewed the tube. The head has a micro-USB port on the back – I connected it with a power bank thru cable. When both devices are connected, the green diode lights up briefly (located together with the switch) – I click and the unscrewed flashlight is lit – it lights in mid mode and only that way.
When else do we see the glowing diode in the switch? When working in any mode – the green color “blinks” for five seconds – it means that we have more than 30% energy in the cell, it lights red – it is below 30%, flashes red – it is necessary to replace / charge the cell as soon as possible. It also flashes red when the main flashlight LED is in mid mode and is drawing power from the power bank.
Flashlight length – 108mm, head diameter – 25mm, weight – 63g (without battery).
Is it worth to spend some money for Sofirn SP40? A bit bigger and weighs a little more than the very popular Skillhunt H03 head torch. BUT it is noticeably cheaper, it has a built-in charger, thanks to which we will use a power bank as a power source. The build quality is also a plus.

low mode
mid mode
high mode

[Review]

Convoy M3 4200K from Banggood
Link – click here
Some time ago Convoy refreshed all M series flashlights and the M3 briefly presented here is an example of this. Made of aluminum alloy M3, like the new L6, is equipped with a XHP 70.2, which draws current from one 26650 (L6 – two) or 18650 cell (need to use two O-Rings adapters).
What is important and should be taken seriously – the manufacturer recommends cells that provide continuous power consumption of at least 11A!
The upper part of the flashlight is a glass with AR (anti-reflective) coatings, the OP reflector (Orange Peel) – with the option to replace / buy the SMO reflector (Smooth Reflector) ) and the previously mentioned Cree XHP70.2 diode.
Below is the switch (called “under the thumb”). This location has its pros and cons, which I will not describe – the slightly protruding button is almost certainty of accidentally turning on the flashlight when it is in your pocket or backpack.
My M3, according to PN-EN 12464-1, has so-called neutral light color (4200K), which of course is not the only option on offer – you can choose 3000K, 5000K and 6500K. There are four lighting modes: 1%, 10%, 40% and 100%. Holding the switch for a long time (with the flashlight off) will activate 1% mode, then another up to 100%.
At the highest mode I managed to achieve a time of 1min 17s using a fully charged battery 26650 and at an ambient temperature of 26C. In the case when the flashlight begins to overheat, the thermal protection will operate and from 100% it will automatically switch to 40% or 10%. What’s interesting – the whole flashlight gets warm rather than just the upper part (head).
There is also on board protection against excessive voltage discharge (low voltage warning) and reverse polarity protection.
M3 weighs (without battery) 290g, dimensions: 48.1mm / 35.6mm / 38.1mm (head / body / tail), thickness reaches 4.4mm, total length 149mm.
And what conclusions do I have? A well-made flashlight powered with XHP 70.2 diode, well priced.

M3 and Utorch UT01
Litwood Z25, Convoy M3 & L6C
Convoy L6, C8, M3, C8+, S2+, S2+ modded, S2+ wit Nichia