JETBeam M2S SST-50 1000 Lumen Flashlight Nylon Fits most mobile devices such

Fits most mobile devices such as mobile phones

Real-time guidance: heart rate and calories burned

And it's certainly a great value

allowing compact packing

JETBeam M2S SST-50 1000 Lumen Flashlight Nylon Fits most mobile devices suchFestures: SST 50 LED Max LED working current is 4A, Max output reaches 1000 lumens (LED lumens). The out of front lumens is approximately 700 lumens. Using 2* 18650 rechargeable batteries, compatible with both 4 *CR123 or 4 *RCR123 rechargeable Li ion batteries, under max output condition M2S can run for approximately 40 minutes. Note: Body extender is required to use 2*18650, 4*CR123 or 4*RCR123. Without extender, M2S uses 3*CR123 or 3*RCR123. SST50