... monitoringAny other fantasy fieldsThis GPS cell phone watch is ideal for hiking, rock climbing, camping, boating, mountain climbing, driving ... GPS chip; Can accurately position even if with weak signals; Can work effectively in limited space such as the ... 16 mmVoltageRechargeable 800mAh batteryPower supplyDC5VStandby time>48hButtonsOne SOS emergency button for emergency aid; Call 1, Call 2, Receive and ...