Item Type: NFC Bluetooth ReceiverMaterial: ABSColor: BlackBluetooth Version: 5.0Bluetooth Protocol: A2DP/AVRCPFrequency Range: 10hz-20khzSNR: > 110dBImpedance: 75 Package List1 x NFC Bluetooth Receiver 1 x 3.5mm Male to Male Cable 1 x USB Power Cable 1 x Line 1 x Description You only need to press the power button for 3 seconds to turn on the phone or other devices used last time.1[Automatic Pairing] Supports NFC near field pairing, which automatically turns bluetooth wireless connection on or off during pairing. 2[Bluetooth Function] The adapter can connect to traditional device like wired headphones or speakers so they can receive Bluetooth music direct from phones and tablets. 3[Advanced Technology] Using the latest power isolation technology, to ensure the perfect sound quality, let you love the music. 4[3.5mm Interface and USB Flash Drive Playback] 3.5mm AV output interface, more compatible. USB flash drive playback is supported. 5[Stable Transmission] Provide more stable and faster transmission with less power consumption, which can represent a superior sound quality.