E-Monster Mini Block Ultra-Portable Bluetooth Wireless Speaker. Supports Wireless Music Streaming and Hands-Free Calling. Compare to Jawbone Jambox Delivers impressive, room-filling, full-range sound with ultra-portable size. Stylish, modern design compliments any space at home or the office! Bluetooth audio transmission, connecting the latest tablets, smartphones, and laptops in a breeze! Built-in Microphone turns Speaker into a Hands-free Speakerphone. Built-in Li-Ion Rechargeable Battery provides up to 8 hours Playback. USB Cable and 3.5 mm Cable included.