Features: Safe night driving design: This bicycle light is very suitable for night riding. It is easy to install, the light is bright, which easily attracts people's attention. 4 Lighting Mode: The headlight and taillight feature a one-touch switch with four different lighting modes, including full brightness, half brightness, fast flashing and slow flashing . Suitable for all occasions: The mountain bike lamp has 4 lighting modes, whatever the occasion, it can light your way and it is waterproof even in rainy days. USB rechargeable lamp: Built-in 650mAh rechargeable lithium battery for each light. Lifespan: about 2-3 hours. Easy installation: The silicone mounting straps are designed with two openings, so it can fit tightly around many seat posts, handlebars, seat boosters, backpacks, helmets and keep the lights secure and firm. 3LED design, energy-saving LED, saving electricity, long service life. Features: Name: Bike Light Power source: 1*650mAh lithium battery (included) Lighting mode: full brightness, half brightness, fast flashing and slow flashing. Lifespan: about 2-3 hours Material: aluminum alloy + engineering plastic Light color: red, white Package size: 14X11.5X4CM Package weight: 160g