Bluetooth 5.3 and Built-in Microphone The Bluetooth 5.3 technology and two 40mm drivers provide stable connections, lower latency, and better sound quality, so you can enjoy top-quality music anytime. The built-in microphone ensures clear and uninterrupted hands-free calls. 6EQ Modes and Hi-Fi Stereo The wireless headphones offer 6 sound modes: Pop, Classical, Rock, Jazz, Bass, and Clear. With the Hi-Fi Stereo function, you can experience crystal-clear music and impressive audio experiences that enhance your music and movie enjoyment. Long Battery Life and Dual Mode The Bluetooth headphones offer up to 40 hours of playback time in Bluetooth mode. Thanks to the dual mode and the 500mAh battery, you can seamlessly switch to wired mode and enjoy uninterrupted music. Comfort and Lightness The ergonomic design of the headphones with super-soft ear cushions and adjustable headband provides high comfort. The ear cushions mimic the texture of human skin and guarantee a comfortable fit even during extended wear. The lightweight, foldable design also makes the headphones very portable. Product Parameters: Version: V5.3+EDR Transmission Distance: 10m Speaker Diameter: 40mm Frequency Range: 20Hz-20KHz Charging: USB Model: Bluetooth / TF (Supports 32GB) / FM / 3.5mm AUX Package Includes: 1 * 6S Wireless Bluetooth Over-Ear Headphones 1 * User Manual 1 * USB Charging Cable