CELEBRAT A4 Wireless Bluetooth Headset

Brand name: celebrat model number: a4 style: headband communication: wireless connectors: usb use: portable media player, mobile phone, computer function: bluetooth, microphone, noise cancelling place of origin: guangdong, china (mainland) drive unit:40mm impedance:32ω charging time:2h input voltage: dc 5v bluetooth version: v4.2