SONY WF-C700N Lightest TWS ANC 20Hr battery, In-Ear, 10 Min Quick Charge,Multi-Point Bluetooth Headset (Black, True Wireless). Focus on your music for as long as you like. These small, lightweight earbuds have an ergonomic surface design for all-day comfort, even for smaller ears.Cancel out background noise with Noise Sensor Technology or use the Ambient Sound Mode to stay connected to your natural surroundings. Headphones Connect app to control your listening experience. For total convenience, these Bluetooth headphones can be paired with two Bluetooth devices at the same time. So when call comes in your headphones know which device is ringing and connects to the right one automatically. Enjoy up to 15 hours of listening thanks to the handy charging case. And if you need to top up in a hurry, 10-minute quick charging gives you up to an hour of extra play time. A Bluetooth chip, which transmits sound to the left & right ears simultaneously, with optimized antenna design,stable connection & outstanding listening. Low audio latency makes for enjoyable viewing too. The Digital Sound Enhancement Engine (DSEE) and Sony?s unique driver reproduce your music with authentic vocals & powerful bass. Change your music to fit your taste with EQ settings Headphones Connect app. Conversation flows freely with easy hands-free calling with a high-quality built-in microphone. With Wind Noise Reduction Structure the WF-C700N delivers your voice clearly, even on a windy day. Adaptive Sound Control is a smart function that senses where you are and what you?re doing, then adjusts ambient sound settings for the ideal listening experience.