Dynamic benchmark algorithm accurate brake indication: brake lightly, brake sharply, brake light immediately highlight, taillight red for two seconds. Tele-vision warning: ultra high brightness COB light source, through the tunnel or night, warning light automatically on. Press the taillight switch key of the remote control: the five warning taillight modes will be switched in a cycle: Slow flashing -> breathing -> burst flashing -> Steady on -> taillight off Built-in lithium battery USB-C charging, standby power consumption as low as 70~80uA, a charge of 1-3 months. Remote control distance to open up to 30-70 meters, 3 kinds of electric ringtone convenient parking lot to find cars Technical parameter Built-in battery: 3.7V 700mAh lithium battery Daily use for 1 to 3 months, continuous standby for about 6 months Charging port: Standard USB-C 5V(some fast charge heads are not compatible) Remote control battery: WL03C: 1 27A(12V) alkaline battery, daily use for 1 to 2 years (remote control for 5 calculations per day) WL09C: 1 CR2032(3V) button battery, daily use for 2 to 4 years (remote control for 5 calculations per day) Transmitting and receiving frequency: 433.92MHz Ambient temperature: -40 ??C to +70??C Storage environment temperature: -40 ??C to +70??C Ambient humidity: <80%