Specifications:
Lighting source: R2 LED Light
Highest brightness (maximum flux): 450 lms -600 lms
Maximum range: 50m -100m
Light Material: Plastic
Stalls: 4-speed
Focus: No
Continuous lighting time: 2-3.5 hours
Time Life: 100,000 hours
Waterproof: Yes
Rechargeable: Yes
Color: Black
Net Weight: 100g
Light Size :about 6*5.5*2cm
Wristband Size: 22*2.4cm (L*W)
Battery: One Lithium-ion(Included)