Features: Large 45mm Dynamic Drivers, AK4331 DAC and Dedicated Internal Amp, Up to 50 Hours of Battery Life, Dual Beamforming Mics for Clear Calls, Pair to 2 Devices with Multipoint, 10-Minute Charge for 3 Hours of Audio, Included Cable for Wired Listening, Supports Amazon Alexa & Google Assistant, Contoured Silicone Cradle, Supports Headbands up to 2-inch Wide