LSTN Satellite Walnut Wood Portable Bluetooth Speaker with Built-in Microphone LSTN mini bluetooth speakers are just 3 inches tall but boast over 10 hours of battery life so you can expect loud, premium sound all night long. The single driver speaker produces big sound for its size and is rated at 5W. LSTN portable bluetooth speakers are handcrafted from real wood, and electro-acoustically tuned to produce amazing sound quality at any volume. LSTN real wood bluetooth speakers feature a built-in microphone for ease of use with answering and ending calls, voice recording, and skipping tracks during playback. Expect stress free, quick bluetooth connectivity. This portable speaker connects with 2 easy steps so you can spend more time enjoying music, less time on your device. LSTN bluetooth speakers feature a 1/8" aux input and usb input for charging. Satellite speakers come with usb and 1/8" aux cables for ease of use.