• Portable Aluminum cube-shaped wireless speaker with 2 operating modes: wireless and AUX/wired (refer to instructions) and works with most wireless-enabled devices including smartphones and tablets. • Power/Technology: Rechargeable Lithium-Ion battery – 3.7V; Capacity: 400 mAh; Input: DC 5V; Output Power: 3W; Aux in: 3.5mm audio jack; Frequency Response: 50-20KHz; Speaker Impedance: 4 Ohm ; Wireless V2.1+EDR; Transmission range: 10M (32 feet). • Features multiple functions buttons on base of device including play, pause, stop and volume. • Approx. 3-5 hours of playback time. • Must be charged prior to first use. Charge time varies by device and environment (2 hours minimum required). • Speak hands-free into built-in microphone • LED indicator light (on bottom) shines red when charging. • Includes instructions, wrist strap, USB to Micro USB charging cable, and 3.5mm to USB line-in cable.