Official Olight website
Please note. There are 6 beam modes including the SOS.
Olight H1R Nova rechargeable headlamp review | Is this the best EDC flashlight?
For me this headlamp is perfect. It’s the best EDC flashlight that I’ve come across so far for the money. Its tough, lightweight, waterproof and the rechargeable battery lasts up to 6 days of continuous use.