The Aurora A21 is the polyamide version of the Aurora A23, it's equipped with a CREE XP-L 6500K cool white LED or Nichia 219C 5000K neutral white 90+ CRI LED, the former is for high-performance light demand and the latter is good to see colors of the object more accurately. It has two colors to choose from - grey body with stainless steel light head or army green with desert tan 7075 aluminum light head.
It weighs 46g and has a compact palm size (2.99" * 0.85"), the max output is 1000 lumens with the CREE LED and 700 lumens with the Nichia LED. It has a metal button for one-hand operation, and the deep carry pocket clip is easy to carry.
1. Moonlight: from off, rapid quad click, then click again to turn off.
2. Momentary on: from off, press and hold the button, release to turn off
3. Memorized mode: from off, rapid double click to turn on the memorized mode, then click to cycle through low-med-high-turbo, then press the button for 0.5s to turn off.
4. Emergency mode: from off, rapid triple click, then click to cycle through strobe-SOS, then press the button for 0.5s to turn off.
*Mode memory: working 3 minutes.