Heacent HC688 GPS Tracking Watch w/ 1.44" Screen, SOS, GSM Quad-band, Monitoring and SMS Positioning
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| Specification | |
| Antenna | Built-in |
| GPS Chip | U-BLOX |
| GSM/GPRS Module | MTK |
| Memory | N/A GB |
| Quantity | 1 |
| Screen Format | TFT |
| Color | Orange + black |
| Display Resolution | 128 x 128 px |
| Memory Card Type | TF |
| Network | GPS / GSM / GPRS |
| Operation Temperature | 20'C~+70'C |
| GPS Sensitivity | 159 dBm |
| Velocity Limit | 515m/s |
| Band | 850 / 900 / 1800 / 1900MHz |
| GPS Accuracy | 10 meter |
| Warm Start Time | 35s |
| Cold Start Time | 45s |
| Hot Start Time | 2s |
| Pre-loaded Map | No |
| Maps Included | Google map |
| Packing List | 1 x GPS watch1 x Data cable (84cm)1 x Earphone (120cm)1 x 3.7V lithium battery1 x Charger1 x English manual |
| Screen Size | 1.44 inch |
| Battery Type | 3.7V 1.7Wh |
| PC Interface Supported | USB |
| GPS System Features | GPS position / Two-way conversation / MP3 / SOS / Alarm clock / Monitoring / SMS position / Real-time tracking |
| Storage Temperature | 40'C~+85'C |
| Humidity | 20~80% |
| Altitude Limit | 18000m |
| Max Extended Capacity | 4GB |
| Power Supply | AC 100~240V 2-flat-pin plug |
| Other Features | GPS tracking and location; SOS emergency call; Speedily family number dial; SMS / Website platform location; Record and playback history contrail; Electric fence; Remote guardianship; Alarm clock; Band length: 23cm; Width: 2.7cm; Dial width: 5.3cm; Thickness: 1.6cm |