This is the newest upgraded 3 in 1 headphones featuring: Bluetooth, FM, and SD card playing. It adopts Bluetooth 4.0 version chip technology with clearer stereo sound quality. Also supports phone calls, wireless, sweat-proof, and noise canceling.
- Adopt 4.0 version Bluetooth chip, clear stereo sound quality and stable signal transmission.
- Standered signal and 10M effective transmission distance (The distance will be shorten if there is any obstacles).
- Built in polymer Li battery, longer playtime.
- Support 32GB SD Card, enjoy more music even without your devices nearby.
- Sponge covers and flexible neckband.
- Polymer Li battery provides up to 6 hrs playback, stand-by time: 112 hrs. - Micro-USB charging port is more convenient for charging.
- Bluetooth Frequency Range: 2.4026-2.480GHz.
- FM Radio: 87.5-108MHz.
- Magnet Type: Neodymium.
- Speaker Diameter: 27 mm.
- Rechargeable Battery Type: Polymer Li-ion.
- Size: 5.3 * 4.6 * 1.5cm(L * W * H).