Kotobukiya M.S.G LED Sword (Battery Powered)
Kotobukiya has introduced their series of battery-operated MSG weapons.This is something everyone's been looking for from first-party manufacturers, and it's finally here. These LED-powered beam swords come with interchangeable effect parts for a variety of blade and color options. The battery will last for 30 hours of on-time, so you'll have plenty of time for low-light photo sessions.
Whilst no scale is given it could be used with 1/144 or 1/100 scales quite successfully.