Introduction :
As audiophile IEMs go, this has decent bass, quite exceptional sound quality and crisp vocal separation. You will love the instrumentals that come out of the speakers, and the gel buds included with the earbuds are quite comfortable. A840BL sport in-ear headphones is portable and provide better ambient noise isolation.
Feature:
Bluetooth distance: W/O obstacles 10m
Bluetooth protocol: HSP, HFP, AVRCP, A2DP
Wearing type : Earhook
Function: CVC6.0 Noise Cancelling, NFC fast pairing, Multi connection function , IPX4 Sweatproof
Voice-command dial.
Charging interface: mini USB
Application: Computer, Mobile Phone, Bluetooth devices etc.
Sound channel: Two-channel (stereo)
Frequency range: 2.402G-2.480G
Frequency response : 20-20000Hz
Battery capacity: Rechargeable lithium polymer battery(3.7v;100mAh)
Drive: 9mm
Impedance: 16Ω
Sensitivity: 90 dB±3dB
Talk Time: 4.5 hours
Music Time: 4 hours
Standby time: 200 hours
Charging time: 2 hours
