Color:Black Compatibility The Bluetooth perfectly works with your smartphone, tablet or Bluetooth enabled MP3 player. Instruction tips Turning 3D sound on: when the headphones are playing music via Bluetooth, press the MF Button and Vol+ Button together then release the buttons immediately. You will hear an indication note, the 3D sound is on. Warranty and Customer Service information one-year warranty from the date of purchase Email Bluedio Customer Service, get answered under 24 hours. Specifications Bluetooth version: V4.1 Supported Profiles: A2DP, AVRCP, HSP, HFP Bluetooth operating range : up to 10m (free space) Transducers: Φ57mm×2 Impedance: 16Ω Frequency response: 15Hz-25KHz Sound pressure level (SPL): 118dB Bluetooth music/talk time: up to 20 hours Standby time: up to 1000 hours (about 41 days) Charging time: 2.5 hours for full charge In the box Bluedio A Bluetooth headphones User manual Carry case with a buckle Audio cable; Talk cable with remote(only for talk not for music); Y audio cable USB charging cable Pouch for cables
