Welcome to our store! Waterproof GPS tracker with mini size for easy concealment. Supports 9v-50v and ACC detection (ACC alarm). Simple Installation: Minimal wiring required. Features Geo-fence alarm & Overspeed alarm. For Vehicles/Motorcycles/Scooters: 2G VERSION GSM 850/900/1800/1900Mhz. Built-in high-sensitivity GPS & GSM antenna for GPS/GPRS/GSM/SMS positioning and tracking. Track via SMS on your mobile phone with a map link. -901 With Battery: Built-in battery capacity: 150mAh. Includes a backup battery, allowing the GPS tracker to function for several hours if disconnected from the vehicle's battery. Features a main power cut-off alarm (sends an SMS alert when disconnected from the vehicle battery, useful if a thief tries to disable it). Color: Black Material: ABS Type: A: with Built-in Battery Package Contents: 1x Car GPS Tracker 1x English User Manual (Only the above package content is included; other products are not.) Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We are committed to providing the best service. If you encounter any issues such as damage or incorrect quantity upon receiving the product, please contact us immediately for the best solution!