Product features: The host has a built-in lithium battery, USB-C charging, exempting the battery trouble, The 4th version of the electricity saving technology, the remote control battery is more durable 3 kinds of electric ringtones, the distance from the remote control is long, which is convenient to find a car, There are three installation methods: bracket, tie, double -sided glue, no wiring, suitable for various models Auto -level 6 section alarm, 110dB of volume, effectively deterred thief, Three -dimensional displacement sensor and special algorithm to accurately identify and steal behavior, reduce misunderstanding Grade 7 sensitivity adjustment, from gently touch, to pushing beating, suitable for various occasions, PC+anti -UV material, IP54 waterproof and dustproof, high and low temperature, not afraid of wind and rain and cold heat Product Description: Project: vehicle anti -theft alarm Charging: USB can be Wireless range: 30-60m Built -in battery: 4.2V 700mAh lithium battery Sound: 110dB Waterproof: IP54 Waterproof Working frequency: 433.92MHz Remote control battery: WL03C: 1 27A (12V) alkaline battery Remote control scope: maximum 164 feet (outdoor of up to 229 feet) Instructions: Before using it for the first time, please charge it and then use it normally after activation. It is recommended to use it after it is fully charge The maximum sound 110db: the sound of the car pole alert effectively scared the thief Color: Black Material: ABS Package Contents: 1 x host 1 x remote control 1 x data cable 1 x cable tie 1 x screw pack 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.