2 x Awe Bright LED giving 5 Lux Power at 10m. USB Recharging port. Functions: Daytime constant running light 2.5 Lux power. Flash constant full power. 5 Lux x Rear 360° LED's. Li-ion 3.7v 300m. AH rechargeable battery charge and low battery indicator. Horizontal bracket adjustability. Water-resistant. Auto charge cut off. Optical lens. USB charger included.