1.5" LCD display screen - Built-in GPS module - Support GSM frequency range: 850/900/1800/1900MHz - Built-in SIM card slot - GPS sensitivity: -163dBm - GPS positioning accuracy: 5~25m - GSM positioning accuracy: 100~500m - Features positioning monitoring continuous or un-continuous tracking speed dialing positioning via phone call or SMS message or checking the position on internet or pressing SOS button in emergency for accurate positioning - Alarm supported and long distance monitoring - Leather band length: 26cm - Package includes: - 1 * GPS watch - 1 * USB cable - 1 * Software CD - 1 * 100~240V AC adapter (US plug) - 1 * Flat to Round plug adapter - 2 * 3.7V/500mAh lithium battery