-Advanced high pressure xenon technology with P13.5S bulb base; -Long life bulbs provide higher output than normal lamps; -Compatible with many types of flashlights, such as Maglite; -Suitable for using Charging and Discharging batteries -Some of normal specifications as follows: 4.8V 0.90A 82lumen for using 2*CR123A or 4*AA Batteries4.80V 1.10A 125lumen for using 2*CR123A or 4*AA Batterie6.0V 0.90A 105lumen for using 2*CR123A Batteries7.2V 1.20A 225Lumen for using 3*CR123A or 2*3.7V rechargeable batteries - Customization is also available.