Since NP has not released a new version of the Pro Clip that I know of, I figured some users might take interest in modifying their's like I did mine years ago. The unit is powered by a cheap 3.7v 250mAh 25c LiPo battery pack used in micro RC helis and a small on/off switch if desired. Required basic tools. Simply set the clip to the 2nd (wide) notch if you intend to clamp it onto a headset. If I recall correctly, the pack provided around a week of use before requiring a recharge. The LEDs will dim when the battery is getting low. Share a few pics if you mod yours! o7 Edit: I will share more pics if I track it down.