Perfect for your outdoor adventures, just clip it to your backpack and get going. Number of Batteries: 1 Number of Speakers: 1 Included: 1 Warranty Card(s), 1 Belt Clip(s), 1 Usb Cable(s) Features: Built-In Microphone, Volume Control, Wireless, Water Resistant, Rechargeable, Built-In Speakers, Bluetooth Compatible Battery Type: Lithium Ion Manufacturer Warranty: 90 Day Parts Limited Peak Power Handling: 10 Watts Power Source: Battery (included) Rms Power: 50 Watts Measurements: 3.94 Height/Inches, 1.18 Width/Inches, 3.74 Length/Inches Minimum Frequency Response: 100 Hertz Maximum Frequency Response: 10 Kilohertz Weight (lb.): 0.5 Lb Country of Origin: Imported