Main features of this bike tail light are, with alarm, waterproof, 7 light flashing modes and wireless remote control, safe and reliable. Featuring a high-capacity battery, this bicycle taillight ensures a long battery life. In addition, it has 7 levels of sensitivity to ensure excellent alerting effect. It is constructed of ABS material. The length of this bicycle light is 6cm, the width is 3cm and the height is 2cm. It is suitable for bike. Item Name: Bicycle Light Material: ABS Features: Waterproof, 7 Flashing Modes, Remote Control Waterproof: IPX5 Battery: 700mAh Working Time: 1-3 Months Standby Time: 6 Months Style 1: Single Remote Control Style 2: Double Remote Control Size Details: Size: 6cm x 3cm x 2cm/2.36" x 1.18" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style 1: 1 x Bicycle Light 1 x Remote Control 1 x Stand or Style 2: 1 x Bicycle Light 2 x Remote Control 1 x Stand