This is a waterproof sensor light, it has four modes, can sense or normal lighting, with side lights, let you ride more safely.<br/>Features:<br />Double-click to change the light to sensor mode.<br />USB rechargeable. Built-in automatic cut-off system to prevents over-charging of bicycle lights.<br />The light is T6 beads with side warning lights.<br />High-power high-light illumination, ranges of about 150 meters, long service life.<br />There are four modes of high brightness, low brightness, flash and induction.<br />IPX-5 waterproof.<br/>Specifications:<br />Material: ABS<br />Battery: 3.7V 2000mah<br />Charge: USB 2200mah<br />Chargings time: 3h<br />Usage time: high brightness: 4.5h low brightness: 8h flash: 10h<br />Lumen: 350<br />Waterproof: IPX-5<br />Type: 1,2 (optional)<br />Type1: front lamp<br />Type2: front lamp &#43; rear lamp<br />Item size: 105 * 41mm / 4.1 * 1.6in<br />Package size: 150 * 130 * 40mm / 5.9 * 5.1 * 1.6in<br />Package weight: Type1: 142g / 5.0ounce<br />Type2: 234g / 8.3ounce<br/>Packing List:<br />Type1: <br />1 * Front Lamp<br />1 * USB Cable<br />Type2: <br />1 * Front Lamp<br />1 * USB Cable<br />1 * Rear Lamp