Mini And Compact Small Small And Exquisite Lightweight And Portable Subwoofer A Button Switch Scientific Audio Speaker Wireless Description: Speaker Type: Portable -Compatible Speaker Adjustment mode: button Features: connection, hands-free call Transmission range: up to 10 meters, the data is measured in an open and unshielded area. (walls and buildings may affect signal transmission) Material technology: aluminum alloy is a specification: 5.0 Play time: Play about 2-4 hours Voltage: 3.7V; 450MAH Charging voltage: 5V Speaker specifications: 36MM Frequency response: 20HZ-20KHZ Signal to noise ratio: 80DB Distortion: 1% Product size: 43*40MM Product weight: 69G Product packaging size: 105*87*39MM Specifications: 1. bass experience: high fidelity bass experience, equipped with strong magnetic speakers, for you to present dynamic bass, clear life, treble crisp, excellent interpretation of high quality, penetrating sound 2. small and exquisite: mini compact, one hand can hold, small body, large capacity 3. Immersive: Scientific audio sounds, shocking stereo sounds, 360-degree surround, giving you an immersive sense of reality. 4. Lightweight and portable: The weight is about 69g, the maximum diameter is 4cm, and it can be carried with you 5. simple operation: a key switch, you can use Package Included: 1 * small speaker 1 * Charging line