This headphone is convenient for you to answer or end calls, suitable for daily conversations, chats, music, and games in office, running, or office.features equipped with soft ear pads and adjustable headband, fit the heads of most people. External audio 3.5mm interface can be connected. Bluetooth 5.1 version provides powerful bluetooth signal and anti-interference ability. Hands-free call, built-in microphone for clear call sound. Support maximum 32g memory cardnot included. Type-c cable charging, can be connected to power bank, computer to charge foldable for easy storage perfect for exercise, running, sports and games, traveling. Specifications material abs color black sizelxwxh 20.7x5.8x18cm bluetooth transmission distance 10m battery type lithium battery battery capacity 300mah charging interface type-c bluetooth version 5.1 package contents 1 x wireless headphone 1 x type-c charging cable 1 x audio aux cord please note please allow slight errors due to manual measurement and different monitors. Due to different display, the color might be slightly different.