Personal GPS tracker, wrist tracker, sport tracker. Platform free tracker. FLYING-DIGITAL WT-8 GPS Wrist Tracker is a stylish device with built-in GPS and GSM modules and high performance antenna. System setting is both by SMS and USB socket. LCD screen displays system setting/coordination data/satellite indicator etc. It can transmit the longitude and latitude coordinate to your cell phone by the short message service, then you can find its location on the free Google maps or any other map software. Also it can be tracked online at real time by GPRS. Find maximum 6 friend's position on the screen by the ditection arrow and distance indication. Calculate your exhaused calorie under running or cycling mode. Data Logger function saves up to 27000 points, record all routes and maps into Google Earth. Features 1. GPS SiRF-Star III chipset fast fixing the position even at a weak signal status. 2. Works worldwide! Support 4-frequency GSM 850/900/1800/1900 MHz. 3. Report GSM operator and cell ID to fix the position when indoor or other NO GPS signal place. 4. Work in phone call, SMS and GPRS three way communications. 5. Navigate you to find your friends&Kids whose phone nubmer is saved in your WT-8 in advance. 6. SOS button send out exact location for immediate rescue/action. Via SMS or GPRS. Show alarm icon and beep on host computer's tracking map at real-time 7. Geo-fence alarm, send out via SMS or GPRS to the tracking map at real-time 8. Over-speed alarm & Compass & data logging function 9. System setting by SMS or USB or soft keyboard, to connect and use PC software interface 10. Multi-user management on website. (GPRS mode or SMS modem mode) Applications Fitness, Sports and Trail Kid/Senior protection Asset tracking Out door staff management Geographic Surveying Specification GSM/GPRS GSM/GPRS module: Sincom300 Tri-Band GSM module (GSM900/1800/1900MHz) GSM Antenna Build-in Protocol Support HTTP and TCP transmission GPS GPS module SRIF III 20 channels Protocol NMEA-0183 compliant protocol GPS Antenna Build-in active high sensitivity antenna Accuracy 1-5m Update rate 1 Hz Start time Cold start: 42s Warm start: 35s Hot start: 1s Electrical Operating Voltage 3.4-4.5V Charge voltage 4.5~5V Standby 25mA Operating 70mA Build in Battery Li-ion 1000mAh Working time 10hours Other Product Size 59*38*18mm Weight 45g(including battery) Box Size 12.8cm*11.5cm*9.5cm Weight 240g Carton Size 53cm*38cm*47cm(for 48PCS) Weight 12KG Accessory Kit Tracvel charger/ ear phone/ Data cable/ CD(user manual and tracking software)/ Gift box