Multi-purpose Headphones: Fits for making office business conference calls, call center phone calls, online courses, language learning, playing games, listening to music, etc. Noise Canceling Microphone: External 330° rotary microphone with CVC6.0 noise reduction technology reduces environmental sound, enhances human voice, perfect for clear conversation. Ergonomic Design: design, adjustable headband length, soft ear pad provide maximum wearing comfort, suitable for different head size wearing. BT5.0 Wireless Connection: BT 5.0 (CSR8615 chipset) ensures low power consumption, stable connection, and fast transmission speed. Compatible with almost all BT-enabled audio devices. Long Battery Life: Built-in rechargeable lithium battery, 2 hours charging, can provide 15 hours of music playing time, 17 hours of talk time, and 200 hours of standby time. Colour: black Material: plastic Package Contents: 1 * Wireless Headset 1 * Charger Base 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.