Xiaomi Mi True Wireless Earbuds Basic 2 Black (TWSEJ061LS)

 No wires - complete freedom! The Xiaomi Mi True Wireless Earbuds 2 has a specially designed ear tip design with a silicone tip, which ensures a snug fit of the earphone in the auricle.   Headphone design - in-ear Connection type: wireless bluetooth Call answer button: yes Impedance: 32 Ohm Sensitivity: 115dB Frequency Response Range: 20 Hz to 20 kHz Built-in Microphone - Yes Microphone sensitivity: -042dB Bluetooth version: v.5.0 Profile support: HFP, HSP, A2DP, AVRCP Radius: 10 m Base Power Type: USB USB charging: yes Working time: 4 h Headphone charging time: 1.5 h Headphone battery capacity: 43mAh Case battery capacity: 300mAh Case charging time: 2 h Charging case power connector: Micro USB Touch control: yes Compatible with iPhone: YES   Left headset weight 4.1g The weight of the right headset is 4.1 g. Charging and storage weight: 35.4g Case dimensions for charging and storage: 62 x 40 x 27.2 mm Headphone dimensions: 21.6 x 26.6 x 16.4 mm