Model DMMT01 Dimensions 26.55×26.06×15.96 mm (L×W×H) Weight Approx. 10 g (excluding the clip magnet) Wireless Mode GFSK 2Mbps Equivalent Isotropic Radiated Power (EIRP) < 20 dBm Wireless Mode Operating Frequency GHz Bluetooth Protocol Bluetooth 5.3 Bluetooth Operating Frequency GHz Bluetooth Transmitter Power (EIRP) < 20 dBm Battery Type Li-ion Battery Capacity 114 mAh Battery Energy 0.44 Wh Battery Voltage 3.87 V Charging Specification Max 5 V Charging Temperature 5° to 45° C Operating Temperature -10° to 45° C Charging Time Approx. 90 minutes Contact :