Description: Lenovo HD200 wireless headphones use BT V5.0 technology, delivering high speed and stable transmission. It has multiple playback modes, such as BT connection, and 3.5mm audio cable, allowing you to enjoy endless music. Foldable and adjustable headband length, soft leather ear cushion, easy for storage, and comfortable to wear for a long time. Also, built-in microphone enables hands-free calls, delivering clear and real talking sound. BT 5.0 Connection: BT 5.0 technology offers fast transmission speed and high-quality signal. Easy to pair with almost all BT-enabled devices. Line-in function: Supports wired connection to the music players (such as MP3/MP4, Laptop, etc) without BT function via the included 3.5mm cable. Long Battery Life: 500mAh rechargeable lithium battery ensures about 20 hours of music time and it has a durable standby time of about 300 hours. Hands-free with Mic: Built-in microphone enables hands-free calls to set free your hands when doing sports and delivers clear and real talking sound. Specifications: Brand Name: Lenovo Model Number: HD200 BT Version: V5.0 Operation Range: 10 Meters (no obstacle) Speaker Unit: 40mm Frequency Response: 20Hz-20kHz Impedance: 32Ω Sensitivity: 105±3dB Battery Capacity: 500mAh Music Time: about 20 Hours Standby Time: about 300 Hours Charging Time: about 1.5 Hours Charging Port: Micro USB Color: Black, Red (Optional) Item Size: Approx. 18.5*16.7*8.0cm/7.28*6.57*3.15in Item Weight: 228g/8.04oz Package Size: 23.0*17.8*9.2cm/9.05*7.00*3.62in Package Weight: 460g/16.22oz Packing List: 1 * Over-ear Headphones 1 * 3.5mm Audio Cable 1 * Charging Cable 1 * User Manual (English)