1.2.4G zigbee 2.1D or 2D ... 4 Pressure, temperature and altitude sensorsoption 5MS5803-01BA/6.4*6.2*2.88mmacceleration transduceoption 6 ... to 6hoursCharging Time4 hoursPhysical CharacteristicsDimension?WeightTBCjacketmagnetic cardoption1/2/3track, bi-directional, SPI encryption ... 2, PBOC level 1&2 approval, China UnionPay approved, PCIprinteroption58mm Thermal TypeBattery 2500mAh,7.4v 3.5" handheld 2.4G ...