Overview: BT 5.0 technology brings high-speed data transfer speed, stable performance, and low power consumption. Equipped with a 300mAh charging box to charge the earbuds. Built-in Microphone delivers a clearer and more realistic sound. It will bring you a perfect user experience. Features: BT 5.0 technology ensures higher data transfer speed, stable and fast connection, and low power consumption. True wireless dual-ear design, left and right earphone channels are separated. Touch control design, no more pressure on your ears. Easy to control music and calls, and activate voice assistant. Built-in Mic on both earbuds with intelligent ENC noise reduction delivers clearer talking sound in stereo mode. Supports SBC+AAC professional audio codec technology, LP2 restores the original sense of dynamic, catches every details of sound. A 300mAh charging case can charge and store the earbuds. Supports 20 hours of music playing time in total. Specifications: Brand Name: Lenovo Model Number: LP2 BT Version: 5.0 Transmitting Distance: 8-10m Drive Diameter: 10mm Frequency Range: 20-20KHz Speaker Sensitivity: 96dB Mic Sensitivity: -42dB±3dB Impedance: 32Ω±15% Charging Case Battery Capacity: 3.7V 300mAh Earbuds Battery Capacity (Each): 3.7V 30mAh Music Play Time: about 3 hours (depends on music volume) Color: Black, White (Optional) Earbud Weight (Each): 3.4g/0.12oz Package Size: 13.8*9.2*3.0cm/5.43*3.62*1.18in Package Weight: 73g/2.57oz Package List: 1 * Pair of Earbuds 1 * Charging Case 1 * Charging Cable 1 * User Manual (English/Chinese)