AI ENC
Smart touch control
φ8mm driver
Voice assistant
Ergonomic design
Ultra-Low power consumption
MINI design
Battery indicator
Type-C
TWS dual-emitter
Master-slave switching
Call in both ears

Product Model: BS531
Profiles: HFP HSP A2DP AVRCP
Transmission Distance: ≥10 meters
Talk Time*: ≥4 hours
Music Playback Time*: ≥6 hours
Standby Time*: Approx. 66 hours
Battery (Earbuds/Charging Case): 40mAh/400mAh
Charging Time: Approx. 1.5 hours
Driver: φ8mm
Driver Sensitivity: 101±2dB @1KHz
Driver Impedance: 32Ω±15%
Frequency Response: 20Hz-20KHz
Audio Decoding: SBC AAC