MEROCA MX2 Smart Sensor Brake Tail Light Mountain Bike Light USB Charging Road Bike Night Riding Tail Light Parameter: 1. Weight: about 56 grams 2. Dimensions: 34x53x9 mm 3. Shell material: AL6061 4. Battery capacity: 500mAh 5. Waterproof rating: IPX6 6. Lamp beads: COB LED 7. Charging method: USB 8. Flood light angle: 180 degrees 9. Light display: single press the power switch once to turn on the tail light, and then single press the switch key in turn to switch the light, there are 3 modes of flashing, 3 kinds of brightness for constant light, 1 kind of breathing light Features: 1. Intelligent brake sensor, when the brake is detected, the car lights will be highlighted for 5 seconds to enter the slow flashing state, stand still for 10 seconds and automatically turn off, intelligent light sensing 2. Long battery life 3. Waterproof and rainproof 4. Threaded fixing method, easy to disassemble and assemble 5. Lightweight and portable 6. 180 degrees to widen the irradiation surface