Battery: rechargeable 3.7V 1000mAh li-ion battery
Storage temperature: -40~+85'C
Working temperature: -20~+55'C
Humidity: 5~95% non-condensing
Usage:
Please make sure your cellphone supports calling / messaging / GPRS networking functions;
Please make sure there is adequate balance in the SIM card;
Please make sure caller ID display was opened and call forwarding was closed;
Please charge the tracker more than 12 hours when first time use;
Insert GSM card correctly.