Cukup dipasang sim card, dapat digunakan untuk memantau dan melacak kendaraan, anak, orang tua lansia dsb Specifications: Size: 43.2 x 32 x 13.6 mm Weight: 30g Connection: GSM / GPRS GSM Frequency: 850/900/1800/1900 MHz Charger Input: AC110-220V 50/60 Hz Charger Output: DC5V 500mA Battery: Rechargeable battery 3.7V 500mA Li-ion battery Storage Temperature: -40 to 80 degrees Working Temperature: -20 to 55 degrees Accuracy of positioning: 100M-1000M Hunidity: 5%-95% non-condensing How does it work: It's simple. Your surveillance operation will be underway in 4 simple steps: 1. Insert a mobile phone SIM card in the device (E.G. free PAYG SIM card from O2 etc) 2 .Conceal the device where it cant be seen... 3. Dial the pay as you go number from your phone..... 4 .Listen - now you can hear what they are really talking about... Power on: open the back cover, put the SIM card into the seats, then it is automatically power on. When booting, indicator will light for 10 seconds, after the indicator is off, cover the back cover then it can be used. Package includes: 1 x Mini Global Tracker 1 x USB Cable 1 x english manual