Need to keep an eye on the location of your valuables? This mini GPS tracker is perfect for the job! All you need is the tracker itself, a GSM SIM card (Vodafone is recommended for the best accuracy) with credit & internet browser access through a PC, laptop or smartphone. This tracking device is powered by an internal rechargeable battery, with approx 7 days life (dependent upon how much you use it). It has a built in shocksensor which means the tracker will only report data when it detects movement; when stationary the GPS tracker enters standby to save battery. The mini tracker measures 70 x 51 x 30mm & is supplied with a charger & instructions. The tracker has an audio surveillance mode, so you can phone the tracker number & listen in to what is going on around it. Extra features you'll find on this device include Geofence (tracker will send a text if it leaves a specified area) & an SOS button (sends an immediate text to all authorised numbers). Tracking is free of charge, just ensure credit is on the SIM card that you use inside the tracker. Quick facts about this handy mini GPS tracker:SIMCOM GSM module (4 frequency) & Taiwan GPS module (Sirf or MTK chipset) Sensitivity: -159d Bm Precision: within 5 meters Tracking time: Warm operation is approx 1s, cold operation is approx 35s Recharge in car: (Input 12V output 5V) Recharge at home: (Input 110-220V, output 5V) Built-in 2000m Ah lithium-battery One 3-Pin charger included Car charger included 1 Year Guarantee A perfect, handy small GPS tracker device to help put your mind at rest!