Bluetooth chip: bluetrum BT8896A

Bluetooth version: BT5.0

Bluetooth protocol: HFP, A2DP, AVRCP, AVDTP, HID, AVCTP

Bluetooth audio decoding: AAC, mSBC

Wearing method: semi-in-ear

Speaker impedance: 32Ω±15% at 1KHz(AC)

Frequency range: 20Hz ～ 20KHz

Shell material: ABS

Headphone battery type: lithium polymer battery