Well based on the clearance group sale on this light it lasted 18 months. I suspect a short life due to high cost combined with minimal run time on High with alkaline batteries. Consumer level acceptable lights appear to me to need to have decent compatibility with alkaline batteries if they take battery sizes commonly available as alkalines. I personally have operated my O’Pen on Energizer Ultimate Lithium batteries since day one for the improved run time.
Link to clearance sale on the Olight version.