It is assumed they use the same leds that the Sofirn uses which is xpl. Freeme is trying to confirm if the leds are exactly the same or if there are differences for the Utorch version.
The Sofirn version is available by itself or in a kit which includes a very impressive 4000mah battery and basic charger. Utorch doesn’t seem to offer a battery kit.
The big difference between the Sofirn 18650 and 21700 versions is the software. The 21700 version has ramping and one click on/off. The 18650 version only has preset levels and one click on, press and hold for off.
I believe at least 70% of BLF buyers already owned charger(s) from decent brand at home. It would be wiser to use the cash saved from the group buy discount to purchase quality 21700 (e.g Samsung 40T) instead.