ANC+ENC Noise Canceling HD Calling Business Headset 

Metal casing

Chip: Jerry 7003D4 ANC/ENC Noise Reduction

Version: 6.0 [Dual-Ear Calling]

Operating Frequency: 2.402-2.480GHz

Supported Protocols: A2DP/AVRCP/HFP/HID/AVCTP/AVDTP, and SPP

Transmission Distance: >10M

Response Frequency: 20～20000Hz

Speaker Unit: Φ10mm 32Ω±15％, 7.118±3dB 5mW

Microphone: 2718 Silicon Microphone -42±3dB

Charging Input Standard: Contact, DC 5V/1A

Battery Type: 3.7V Polymer Battery, Charging Case 300mAh, Earphone Battery 35mAh

Charging Time: 1h

Single Playback Time: 6 hours