Features: Upgraded BT5.0 chip, low latency, stable and fast transmission, wide compatibility. Adopt metal composite diaphragm, omnidirectional sound technology ensures the balanced diffusion of sound, bright treble, full midrange and powerful bass, HiFi sound quality. Small and portable, it comes with a lanyard, easy to carry and use whenever you want. Built-in microphone, intelligent noise reduction, clear and bright sound without delay. Silicone buttons, comfortable feel, sensitive response, easy to operate. Built-in 1200mAh large capacity lithium battery, safe and stable, long endurance time. Specification: Type: BT speaker Brand: Lenovo Model: K3 Color: Black BT version: V5.0 BT transmission distance: 8-10m Shell material: Metal Frequency response: 100Hz-20KHz Playing time: About 6 hours Battery capacity: 1200mAh Supported protocol: A2DP/HFP/HSP/AVRCP Rated input: 5V/500mA Item size: 8 * 8 * 6.3cm /3.15 * 3.15 * 2.48in Packing list: 1 * BT speaker 1 * Charging cable 1 * Lanyard 1 * User manual