Bluetooth 5.0 connection: Wireless connection, frees you from twisted or kinked cable. Up to 10 meters operation range, no need to worry about the disconnection while you are on a move. Suport TF card and FM radio 2.Music card support: This headset is like a MP3 player. You can insert the music card in the headset and listen to all the music you want. 3.Audio cable applicable: If the headset runs out of power or you have to connect it to a device with no Bluetooth connection, you can connect them with a 3.5 mm audio cable. This is a very convenient and thoughtful design. 4. High quality: Built in high quality audio coded, giving you excellent voice experience, Ergonomic design make this headsets comfortable for long time wearing. Foldable design makes it easy to carry with. 5. Multifunctional: This headphone has more functions than you can imagine, like Radio Function, with a built-in radio antenna and a radio set, this headset is like a radio.Bluetooth version: ISSC4.1 + EDR.Support Profiles: HSP, HFP, A2DP, AVRCP. Profile and Advanced Audio Distribution Profile(A2DP). Operation Distance: 10m. Transmitting Power: Class 2. Frequency Range: 2.4026 GHz-2.480 GHz.Resistance: 32ohm. Sensitivity: 105dB+ / - 3dB. Rechargeable lithium battery: 300mAh. Talking Time: 8 hours. Music Playing Time: 4 hours. Standby Time: 120 hours. Charge Time: 2-3 hours. Plug Type: 3.5mm.Bluetooth High Speed Connected, Anwsering Incoming Calls, Handsfree TalkingSuperior Compability, High Fidelity Stereo Surround SoundNot only wireless, also can be used as wired headphone Built-in microphone technology allows clear Phone communication; Enables use as a headset. Music and phone controls ensure ease of useSuport TF card and FM radio. with operation distance 10m. Rechargeable lithium battery: 300mAh.Signal to Noise Ratio:88DbBluetooth Solution:V4.2, EDRCharging Time:2 hoursVoltage:DC5VFrequency Range:20KHz-20000KHzFM Frequency:87.5-108MHzSensitivity:90dB/mWBluetooth Frequency:2.401-2.480GHzWorking Time:5~6 hoursBluetooth Distance:10 metersEAN:Does not applyFrequency Response:50HZ-20KHzBrand:UnbrandedOutput Power:35mWMPN: