Model N/A Color Black Quantity 1 GPS Chip SIRF3 chip Network GSM Band 850/900/1800/1900MHz GSM/GPRS Module GSM GPS Sensitivity -159 dBm GPS Accuracy 10 meter Pre-loaded Map No Maps Included No Screen Size No inch Screen Format No PC Interface Supported USB GPS System Features Easy operation global universal; SOS asking help button send positioning message to the set number Memory No GB Power Supply Built-in lithium battery Battery Type 800mAh Battery Standby 250 Hour Other Features Remote AGPS assistance tracking function; Default five groups numbers a key external dialing; Mute function; Voice controlled automatic dial; Less than 10% of the electricity automatic reminders. Packing List 1 x GPS 1 x 2-Flat-Pin power adapter (110~240V) 1 x USB charging cable (71cm) 1 x Earphones (80cm) 1 x Chinese / English user manual