Basic Parameters: GSM850/900/1800/1900MHZ spectrum Charging Input: AC110-220 v50 / 60 Hz Charging Output: DC5.0V 300-500mA output Machine Battery: 3.7V 400mah lithium ion battery Standby Time: 12 days. Working time is 4-6 days Expansion Card: Micro-TF card The video: 320x240 The Size Of The Photo: 640x480 Talk: 150-180 minutes Format: GSM/GPRS Storage temperature: -40°C to + 85°C The operating temperature ranges from -20°C to +55°C Humidity range 5%-95% non-condensing GPRS: Payload 60, IP Working Voltage: 3.4-4.2V DC Standby Current: material 2.5 mA Turn On Acoustic Current: about 30 mA Talking: The current is about 150 mA GSM Positioning Time: 25 seconds Warning: Must insert SIM card before charging Colour:Black Material:ABS Size:5x5x3cm/1.96x1.96x1.18inches Package Contents: 1 x Car Locator Tracker 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.