Perfect Sound KB10 Speaker: Bluetooth Technology Connection Support Built-in Sound Amplifier 500mAh Lithium Battery Compatible with Smartphone, Computer, and Notebook Effective Distance: 10m Output Power: 3W Product Features: - Bluetooth Hands-free Calls - Intelligent Voice Prompts - TF Card Support - Triple sound What's in the box 1 x Wireless Speaker 1 x 500mAh Lithium Battery 1 x Aux Cable 1 X USB Cable 1 x User Manual