Color: White Connectivity: Wireless Compatible with: All Type: In Ear Latest update to support iphone 11 Bluetooth 5.0 Version Touch press control Intelligent noise reduction Auto Pair With IOS System and Show the battery level Bluetooth version: V5.0 Frequency response: 20hz-20khz Sensitivity: 103dB SPL +/ -3db Support protocols: HSP/HFP/A2DP/AVRCP Impedance: 16ohm Voltage: 3.3 - 4.2 V Power: 5mw Battery capacity of charging bin: 400mAh Earphone battery capacity: 45mAh Music time: About 3h (80% volume) Call time: About 3.5h Standby time: About 80h Charging bin USB charging time: About 1h Charging bin wireless charging time: About 3h Earphone button control: Touch control Product size (charging bin) : 44x22x53.8mm Product weight: About 41g