The handlebar with turn light is easy to install and waterproof. The turn light will remind passergers and drivers keep distance from you, which ensures your riding security. Features: Made of aluminum alloy, lightweight, solid and durable. With turn light, improving your riding safety. Easy to install on the bicycles. Waterproof, ergonomic and comfortable handle. Fits most mountain bikes(handlebar standard 22.2mm / 0.9in diameter). Specifications: Material: Aluminum alloy Color: Black Battery Capacity: 210mAh * 2 Work Time: 80H Protect Rate: IPX5-6 Temperature: 0-55 Driver Caliber: 22.2mm / 0.9in Product Weight: 160g / 5.6oz Product Size: 120 * 40mm / 4.7 * 1.6in Package Weight: 170g / 6oz Package Size: 163 * 70 * 45mm / 6.4 * 2.8 * 1.8in Package List: 1 * Pair of Bike Bar End