The Alpha Series are incredibly powerful LED flashlights that can produce over 500 lumens. Total lumen output is measured in an integrating sphere, not fabricated by the marketing department. It's 4x brighter than a 3D cell LED Maglite and 1/4 the size. Based on the current state of the art technology, it is the brightest flashlight light you can buy in a form factor this size. Brighter LED's exist, but that would result in a light that becomes dangerously hot during operation. LEDs are efficient, but these extremely powerful LEDs generate heat.
The Alpha Series utilizes a rechargeable lithium-ion battery called an "18650." This is a size designation, much like AA size or C size. This specific type of cell is commonly found in computers and power tools. Modern li-ion cells have incredible energy density and make it possible for the Alpha (MC18-B variant) to run for more than 1.5 hours on full power, and over 30 hours on low. Li-ion batteries have no "memory" effect and can be recharged any time. Useful life should be in excess of 300 charges.
Alpha Series lights utilize a microprocessor-controlled LED driver to provide a CC (Constant Current) supply of power to the LED. This means optimized output for the life of the battery, instead of constantly diminishing output. The driver operates at three power levels and has a "memory" feature that will store the last level used and turn on at the same level next time the switch is activated.
The driver also features a "low battery warning." When the battery voltage drops to 3.2 volts (or less) the light will switch to "low" mode and strobe once per second. This is an emergency mode. The battery should be changed or charged IMMEDIATELY to prevent permanent damage to the battery.
The Alpha Series is specifically designed to be repaired and upgraded based on the idea of longevity instead of disposability. We live in a world where things are disposable and planned to be obsolete; I don't believe in that. One of my core design principles is: the light must be easily disassembled into it's component parts so that ANY part can be repaired or replaced when necessary. As a designer I spend a lot of time thinking about "why" things are made so poorly these days, and this is my small effort to begin doing something about it.
Every Alpha Blue-Lable or Custom flashlight is made to order. I maintain a small stock of parts, but there is no stock of finished inventory. You order it, I build it. This means it may take up to 30 days for me to ship your light...but normally it should be less than a week.
The exception to this rule is the Ready-Made. This light is pre-assembled in small batches of 10-15 and ready to ship as soon as you order it.
I'll be honest. I like to buy things from small shops made by people who care about them. The old fashioned way. Prometheus is about delivering real value and that's why I go above and beyond to do everything to the best of my ability. That's also why I spend so much time writing the content for this site. I want to give you an idea of who I am, what I care about, and why I'm doing this.