The LED MiniLight replaces the tweezers in the scales of some 58mm Swiss Army Knives. The light is activated by pressing and holding the shield/logo on the scales that acts as a momentary switch. The original version used a 2mm red LED and a 3V CR1025 cell. A white option, also using a 2mm LED, was introduced in 200x, and used the same battery.
In 2008 a new white light was introduced that uses a 3.5mm LED rated at 18,000 mcd. This new version is significantly brighter than the previous version. The 2008 white LED uses a 1.55V 389E silver oxide button cell battery. The earlier red and white lights have been phased out.
Also introduced in 2008, were clear translucent scales known as Silver Tech. These scales only contain the new white LED.
When replacing the battery, the positive (+) size faces down, the negative side faces up towards the scales. The battery is generally good for 2 years with typical usage.