AUSDOM M04 NFC Wireless Bluetooth 4.0 Stereo Over-ear Wired + Wireless Headphones with Built-in Microphone, Black & Red

Features Deep bass and full range sound for a superior audio experience Superior audio experience for both listening and phone call Full range Frequency Responses (20Hz-20kHz) for rich bass Mini high sensitivity microphone enhances speech accuracy and clear voice transmissions Comfortable, lightweight fit for long-term wearing Over-the-ear design, with soft ear cushions Stretch headband for any head size Adjust ear cups for any storage needs Lightweight design at7oz/200g Easy to adjust audio and phone call and long play-time Built-In mic for headset functionality with controls for media and phone calls 400Am rechargeable battery guarantees 18 hours play-time NFC function make pairing easily Only touch lightly with NFC area, Easy to pair. But you should check weather your smartphone or Tablet have NFC function. As we know, Some Samsung and Android Phone or Tablet have NFC function. Specifications Bluetooth version: 4.0+EDR Bluetooth distance: 10m Transmission frequency: 2.40GHz-2.48GHz Transmission power: Class 2 0.025-2.5mW Support profile: HSP/HFP/A2DP/AVRCP Pairing name: AUSDOM M04 Speaker diameter: 40mm Battery type: build in 400 mah rechargeable lithium battery Charging port: micro USB Charging time: 2-3 hours Running time: about 20 hours talking /music playing Standby time: more than 250 hours.