Bluetooth 5.3 and Built-in Microphone Bluetooth 5.3 technology and dual 40mm drivers provide stable connections, lower latency and better sound quality, so you can enjoy premium 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. The Hi-Fi Stereo function lets you experience crystal-clear music and impressive audio experiences that enrich your music and film 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 ease The ergonomic design of the headphones, with super-soft ear pads and an adjustable headband, ensures a high level of comfort. The ear pads imitate the texture of human skin and guarantee a comfortable fit even during extended wear. The lightweight, foldable design also makes the headphones highly portable. Product Parameter: 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