JETBeam M2S SST-50 1000 Lumen Flashlight Everyday Carry or worrying about exhaled moisture

or worrying about exhaled moisture wetting insulation and decreasing performance

the UI has some added fuctnions

Powered by 1 x CR123 battery

Suunto Observer's altimeter has a range up to 9 000 m/29 500 ft with a 1 m/3 ft resolution

JETBeam M2S SST-50 1000 Lumen Flashlight Everyday Carry or worrying about exhaled moistureFestures: 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