Say goodbye to tangled wires and pulled-out plugs. The Sony WI-C310 wireless earphones comes with Bluetooth wireless technology, you can connect to your device wirelessly and enjoy flawless, interruption-free listening. Listen to your music in clear sound quality from 9mm drivers on the Sony WI C310 Bluetooth headphones. With up to 15 hour battery and 10 minute charge for 60 minute playback, your music won’t stop. Go wireless with Bluetooth Say goodbye to tangled wires and pulled-out plugs. With Bluetooth wireless technology, you can connect to your device wirelessly and enjoy flawless, interruption-free listening. Whether you’re listening to pop hits, classical concertos or jazz solos, the 9mm driver units deliver dynamic audio performance with deep bass, crisp treble and outstanding clarity. The around-the-neck design is comfortable, lightweight and keeps your headphones out of the way, so you can get on with listening in total freedom. Headphone FeaturesSilicone ear pieces. Neckbank cord. Connection: wireless. Bluetooth enabled for a wireless connection to your devices . 9mm driver. In-line with microphone for calls and track control controls. Foldable. 10m range. Compatible with universal smartphones. Rechargeable battery. 15 hour battery life. 4 minute charging time. In the box: USB Cable: Type-CTM (approx. 20 cm) Earbuds: Hybrid earbuds(S/M/L). General InformationModel number: WIC310B. CE7. Manufacturer’s 1 year guarantee. EAN: 4548736098961. Warning - Not suitable for children under the age of 3 years due to small parts and entanglement hazard. Caution – To prevent possible hearing damage, do not listen at high volume for long periods.