LR Baggs Five.O Active Ukulele Pickup The L.R. Baggs FIVE.O ukulele system is small, light-weight, and best of all, specifically tuned to track the uke's natural dynamics and its unmistakably unique voice. The system combines a custom version of our award winning Element undersaddle pickup with a miniature endpin preamp, soundhole mounted volume control and is powered by a 3 Volt coin cell battery. The entire system weighs less than one 9 Volt battery and tucks away neatly inside the small instrument for a non-invasive installation. The pure, all-discrete electronics are voiced for the most accurate frequency response you have ever heard, so plug into the FIVE.O and enjoy the performance you have been waiting for. Specifications Battery: 3V Coin Cell battery (2032 sized) Current: 0.73mA Battery Life: 300 hours Output impedance: 3.6k