Features:
Transform your non-Bluetooth Headphone into Wireless Headphone.
The adapter with built-in Microphone and Volume control.
Can be connected to two mobile phones at the same time.
Compatible for AKG K450 K451 K480 Q460 Headphones.
Support Answer / hang up call, phone wait, volume adjustment, last and next song, music playback / pause, power on and connection voice prompts, maximum / minimum volume voice prompts, telephone redial, Bluetooth back, low power voice prompts.

Specification:
Bluetooth Specifications: Bluetooth 4.1
Battery Capacity: 120mAH
Support Bluetooth Protocol: HFP v1.6, HSP v1.2, A2DP v1.3, AVRCP v1.5, SPP v1.2
Audio Performance: Support SBC, MP3, AAC, stereo
Bluetooth Distance: Within 10 meters
Duration: 8-10 hours
Charging Voltage: 5V
Charging Mode: MICRO 5PIN USB port
Charging Current: 200MA
Package Weight: 20g
Quantity: 1pc
Fitments: For AKG K450 K451 K480 Q460

Package included:
1 x Wireless Headphone Cable
1 x USB Cable