Any time, Any where,You can enjoy music with TRIPOD. The Tripod is a portable, well designed speaker, small enough to carry in your pocket and take everywhere with you. Specifications Operating time Max 10 hours Operating temperature 0-45癈 Operating humidity 0-95% Power AAA size 2 EA (not included) Alkaline 3V Size apporox32.2*142.5mm Weight approx60g Sound Stereo Sound pressure level 110dB-2dB~110dB+2dB Features (1) Miniature high power amp produces crystal clear sound. (2) Portable 3-leg design so you enjoy your music anywhere. (3) 10 hours of playback from two AAA battery. (4) Sound quality will vary depending on MP3 Files and MP3 Players.