Sony WH-CH720N (WH-CH720N/BCE) is a lightweight over-ear wireless headphone with Active Noise Cancellation powered by Sony’s Dual Noise Sensor technology and Integrated Processor V1. It offers up to 35 hours of battery life with quick charging support (3 minutes for up to 1 hour playback). The design is extremely light for all-day comfort. It features Adaptive Sound Control and Ambient Sound mode to adjust to surroundings. Built-in microphones provide clear hands-free calling.