Features: Higha compatibility with 99% device with bluetooth function and 3.5mm jack High quality bluetooth CSR chip, allow quick connecty and long distance responsable Rubidium magnetic coil built-in speaker, give you excellent super bass musical experiense Screen touch control and display, easy to control and handle the battery and music playback Specifications: General Specification Brand XIMU Model AJ-81 Color Black Cable Length Wireless Wearing Type Hand-free speaker Product Weight (kg) 0.35 Technical Parameters Connectivity Bluetooth Conectivity Interface AUX IN Cable, USB Charging Port, TF Card Port Output Power 20W Bluetooth Version Bluetooth 4.0 Impedance 4Ω Channel 2.0 Package Included: 1X AUX IN cable 1X USB Charging cable 1X User's manual 1X XIMU AJ-81 Bluetooth Speaker