1Double T6 bulb, which has large range of light and high brightness. 2Two 18650 batteries were built in, and the lasting working time is 6 hours. 3Waterproof & aluminium Alloy Body: no need to worry about that the heavy rain will ruin the bike light or damaged in case of falling off from the bike handlebar. 42 Types of Light holders: center pillar bracket and 360-degree rotation bracket. 54 lighting modes are low/Mid/Highlight/Flash, meet the needs of different situations.Features:Double T6 bulb, which has large range of light and high brightness. Two 18650 batteries were built in, and the lasting working time is 6 hours. Waterproof & aluminium Alloy Body: no need to worry about that the heavy rain will ruin the bike light or damaged in case of falling off from the bike handlebar. 2 Types of Light holders: center pillar bracket and 360-degree rotation bracket. 4 lighting modes are low/Mid/Highlight/Flash, meet the needs of different situations. Specification:Condition: Brand NewMaterial: Aluminum AlloyColor: BlackLamp Beads: T6*2Brightness: 2000lmBattery: 2*18650 Batteries(Included)Light Mode: Highlight, Mid, Low, FlashEndurance: About 6hGrade of Waterproof: IP-65Illumination Distance: 200~300mSize: Approx.9 * 4.8 * 3 cm / 3.5 * 1.9 * 1.2 inWeight: Approx. 351 gPackage List:1 * Bicycle Head Light1 * USB Cable1 * Rotation Bracket1 * Center Pillar Bracket6 * Pads1 * Rope Ring