Remax RB-M8 Mini Portable Bluetooth 4.0 Speaker Aluminum Wireless Hand Free MIC Boombox Sub-woofer USB AUX Ports Loudspeaker, you’ll get endless convenience and pleasure. This Bluetooth speaker acts as a power bank additionally. Featuring wide Bluetooth connection range, this speaker is reliable and convenient. Made of superb materials with exquisite workmanship, it is excellent in quality and elegant in appearance. In a word, it is your regret less decision! 500mAh battery ensures ultra-long playing time up to 10 hours High fidelity music and clear conversation quality Low power consumption, energy-saving and practical Elegant and stylish appearance, compact and portable. Hands-free call function with built-in MIC for clear voice Support Bluetooth play, AUX play Seamless aluminum design, a perfect decoration for house.Technical SpecificationsMaterial:Anodized aluminum enclosure+ABSAudio Classification: MiniPlayback Function: MP3Speaker Structure: Floor-StandingChannels: 8 (7.1)Loudspeaker Accommodation Mode: TouchSpeaker Type: Sub wooferMic: Built- in MICBluetooth Version: 4.0Rated Power : 5WAUX: Port SupportBattery Capacity: 500mAhBattery Type: Li-IonUSB Output: DC 5V-500mAUSB charging:DC 5V--500mAFrequency response:90Hz-20KHzSensitivity:80db 2dbSNR: 80dbWorking time: about 6-7hoursTransmission Distance: ≤10mUse Portable: Audio Player, Mobile Phone, Computer