Soundflow Soundboard Wireless Portable Speaker. No Bluetooth necessary, no pairing, no wires, no setup. Model: SP20BKGR Product Features: Works with any smartphone with an external speaker; no pairing, cables or Wi-Fi network required Compatible with iPhones, iPods, and Android devices Built-in passive radiator to enhance bass effect LED power indicator, volume controls and 3.5mm AUX input Makes a great speakerphone Product Description: The Soundboard Portable Speaker has a total output power of 2W, with enhanced sound from its dual-ported audio design, volume controls, and a 3.5mm audio in jack (cable included). The Soundboard offers two options for power: 5V DC or batteries (3xAA, sold separately), with an LED power indicator. Enjoy amazing, size-defying sound anywhere you go with the SOUNDFLOW Soundboard Portable Speaker! Box Dimensions: 9" Long x 4" Wide x 1.60" Tall Weight: 10oz ( packaged )