Having an excellent GPS and GSM module built inside, TLBC-01 performs first class tracking ability and shows accurate position. There is only one button on the device, for porwer on/off and sos alert. Moreover, the lights are integreted with the button. Though its size is as small as a business card, it can last 10 days battery life when in standby mode. The compact design makes TLBC-01 very covert.