The Petzl Duo S is a waterproof, rechargeable head torch built for caving and other wet, dark places. It puts out up to 1,100 lumens in BOOST mode and runs on a removable 3200mAh lithium-ion battery.
Waterproof to IP67. It's sealed against dust and tested in water to 1m for 30 minutes and 3m for 10 minutes, so it keeps working in heavy rain, spray and even underwater.
Bright without the glare. Five modes mix wide and focused beams, reaching up to 200m. FACE2FACE dims the light automatically when two Duo S lamps face each other, so you don't dazzle your partner.
Easy to use in gloves. A large rotary switch selects the mode and locks, so it can't switch on in your bag. A gauge shows the battery level, and when it runs low, a 20-lumen reserve mode gives you another 45 minutes.
Ideal for caving, climbing, night work and emergency kits.
Run time
| Mode | Brightness | Beam | Run time |
| Ambient (wide) | 80 lumens | 20m | 23h |
| Proximity (wide) | 180 lumens | 35m | 12.5h |
| Movement (mixed) | 330 lumens | 70m | 6h |
| Rapid movement (mixed) | 700 lumens | 160m | 3.5h |
| Distance (focused) | 450 lumens | 190m | 4.5h |
Specifications
| Max output | 1,100 lumens (BOOST) |
| Max beam | 200m |
| Waterproofing | IP67 |
| Battery | 3200mAh rechargeable lithium-ion, removable |
| Charge time | 4 hours |
| Weight | 370g |
| Mounting | Headband, or a helmet with Petzl PRO ADAPT plates (sold separately) |
| Included | Battery, charger, washable headband |
| Guarantee | 3 years |
Pack a Petzl e+LITE as a backup light, or browse all our head torches.
Free delivery to mainland UK on all orders over £80.
