VoiceBooster by TK Products, LLC Model: VoiceBooster MR1506 (aker) Color: Black Peak Power output: 10 Watts Dimensions: 3.75in x 2.81in x 1.08in (90mm x 70mm x 27mm) Weight (w/ Batteries): 0.41 lbs (190 g) Power Source: Built-in Lithium Rechargeable batteries Battery Life: 6-8 hours, 6 hour recharge, 2-3 year life (replacements available) Also included: VoiceBooster packaging, VoiceBooster operation Manual, VoiceBooster 6 Month Warranty, Headset microphone, Charger cable (US plug), MP3 cable (male to male 3.5mm), MP3 line in port, Microphone line in port, Removable belt clip, adjustable waist band, Carry bag. Possible Uses: Costumes, Props, Electronic sound effects, MP3 player, Teachers, Professors, Ministers, Coaches, Tour guides, and Presentations. Features: - Rechargeable lithium batteries that last 6-8 hours of continuous use before needing a charge. - Battery life will last 2-3 years. - Sound covers over 3,500 square feet. - Small and portable. - Comes with adjustable waist or neck band and a removable belt clip. - Can also be used MP3 speaker. The amp has a microphone input and a MP3 input . The amp will accept signals from both input ports and out through the speaker at the same time. The VoiceBooster brand is owned by TK Products, LLC. Each VoiceBooster product comes with a 6 month parts and Labor Warranty that is serviced by TK Products, LLC. The VoiceBooster must be purchased through TK Products or one it"s authorized dealers for Warranty Claims to be honored. Buy with confidence!