Kids Headphones, MindKoo Bluetooth Wireless Stereo NFC Kids Headphones-Comfortable On-ear Headset with built-in Microphone for Mobile Phones, iPad, Laptops (Black) - 1. [Bluetooth Connection] - Convenient Bluetooth (V2.1 + EDR) connection, support A2DP, AVRCP, HFP.IOS& Android, up to 10m wireless transmission. - 2. [Great Sound Effect] - Hands-free calls and sensational music with powerful bass, crisp and warm sound effect. - 3. [Multi-Device Suitable] - Compatible with most PC, tablet and phones, standard 3.5mm AUX audio input port. - 4. [Easy to Use] - Foldable and adjustable headband, soft ear cushion, perfect to use at home, when doing sports or in daily commuting. - 5. [Rechargeable Battery] - Up to 7 hours music listening when the voice volume 70%, easy volume adjusting and song choosing, stylish design, help you tune into the world of music.