Dear Sir/Madam, Type:Gps Tracker Use:Hand Held Screen Size:Other Function:Other Warranty:2 Years Battery capacity:Chargeable 3.7V 600mAh Li-ion battery Operating Temperature:-20C to +80C GPS Tracker Storage Temperature:-40C to +85C child locator GPS Sensitivity:-159dBm personal gps tracker Humidity:5%-95% non-condensing GPS Tracker Voltage of car power system:12 V/24V GPS Tracker weight:85g GPS Tracker Size:74*45*52mm GPS Tracker Show More