Lampu ini memiliki fitur smart lamp, yaitu dapat menyala terang ketika sepeda anda melakukan pengereman, seperti lampu mobil/motor setiap paket pembelian sudah mendapatkan lampu yang bisa di pasang di seatpost, dan di saddle. Mode: 4 modes Bright-Breathing-Flashing-SOS Material: Aluminum Alloy + Plastic Size: About 3*3.4*6.4cm Weight: About 33g Battery: 3.7V 300mAh Battery Life: About 30h Feature: 1. Smart start and stop + vibration sensor + light sensor. Dual mode cooperation, more worry-free 2. IPX6 Waterproof 3. Quick Install 4. Charging Reminder Light-sensitive: Sensing bright light, the lights automatically turn off, when the light dims, the lights automatically turn on Shock-sensitive: Stand for 30 seconds, turn off automatically, turn on automatically after sensing vibration