Hamburger Mini Speaker

Description
This will be a treat for your ears! The Hamburger Mini Speaker is a 3W economical speaker option for any project needing stand-alone sound. The Hamburger features a built-in lithium polymer battery for portable application， a 3.5mm stereo jack(sorry， iPhone 7 users)and two volume options(quiet and loud)to control how loud your sound needs to be. This speaker really can't be compared to a good pair of JBLs， but for the price point the Hamburger won't break the bank for your next audiophile project!
Why call it the Hamburger? When you twist the top and bottom halves of the speaker in opposite directions， it expands out like an accordion extending the bass reflex portion. Each Hamburger Mini Speaker comes with a 1.5ft mini USB cable for recharging capabilities.
We use this amplified speaker quite frequently with our Spectacle Audio Board and Sound Kit， but that doesn't mean you can't find a different use for it!
Features
Speaker：3W(1KHz， THD10%)36mm
Frequency Response：20Hz～20KHz
S/N ratio：≧85dBA
Built-in 3.7V 180mA LiPo battery
～1--2 hour play time
52mm x 38mm