Experience powerful bass in a travel-friendly size with the verbatim wireless cube Bluetooth speaker. Featuring TWS stereo sound, this speaker can also be paired with a second speaker to provide even more sound. Designed for more than just music, the cube Bluetooth speaker features a built-in microphone, for hands-free calling at the touch of a button. Equipped with a rechargeable battery, this compact speaker provides up to 5 hours of continuous playtime on a single charge, and a convenient on/off button allows you to conserve battery life when not in use. The verbatim wireless cube Bluetooth speaker is backed by a 1-year limited warranty. Features: TWS stereo sound - pair two speakers together powerful bass in a compact, travel-friendly speaker built-in microphone for hands-free calling rechargeable battery - up to 5 hours of continuous playtime on a single charge microSD card slot for mp3 playback convenient carrying strap on/off button conserves battery life when not in use compatible with most Bluetooth-enabled devices 1-year limited warranty package includes: Bluetooth speaker charging cable technical specifications: operating time: about 5 hours operational range: up to 33 feet output power: 5w frequency response: 100hz-20khz sensitivity: 85db 2db .