Knog
Plus Rear Bike Light
A small safety light for a commuter or casual rider, easy to move between bike and bag.
Where to buy
We do not sell this. These are the shops where we checked it, by country. Prices change; the shop's page is always the final word.
Australia
Knog
Price seen October 13, 2026
$29.99 AUD
View at Knog (opens the shop in a new tab)
Sold to: Australia. We may earn a commission if you buy through these links. How we make money
Why it made our lists
A 17g waterproof rear light that charges from a built-in USB plug and clips to bags or helmets. For someone riding to work in the new year. It is for being seen, not for lighting the road.
A 17 g rear light that charges from a built-in USB-A plug and clips to a seat post or bag. Good for a casual rider or commuter. It is for being seen, not lighting the road.
A 17g rear light that charges from a built-in USB-A plug and clips to a seat post, bag or helmet. For a teen who rides to school. It is a be-seen light, not one to light the road.
A 17g rear light with a built-in USB-A plug, IP66 waterproofing and clips for seat posts, bags and helmets. For the colleague who cycles in. It is a be-seen light, not one to light the road.
What it is
A 17g rear bike light with up to 20 lumens, an IP66 waterproof rating and a built-in USB-A plug for charging without a cable. Runs 2 hours on steady to 40 hours on eco flash. Mounts on seat posts or clips to bags and helmets.
A small red rear light, 17 grams, that sits on a magnetic mount on the seat post or seat stay, or clips onto a bag, helmet or clothing. It has a USB-A plug built into the body, so it charges by plugging straight into a computer or charger with no cable. Five modes run from steady to an eco flash that lasts 40 hours. A red ring around the button warns of low battery. It is rated IP66 for rain.
The details
- Output
- 20 lumens; visible up to 450 m
- Run time
- 2 hours steady to 40 hours eco flash
- Charging
- Built-in USB-A plug, 2 hours
- Waterproof
- IP66
- Weight
- 17 g
- Size
- 66 x 24 x 14 mm
- Fits
- Seat posts 22 to 32 mm+
- Warranty
- 2 years
In the box
- Plus Rear Bike Light
- Small 22-27 mm strap
- Large 28-32+ mm strap
- Plus Bike Light Mount
From the shop's product page, read October 3, 2026.
Worth knowing
It is a be-seen light, not bright enough to see the road by, and charges from USB-A only.
Skip it for someone whose devices have only USB-C ports, since it charges through a built-in USB-A plug.
- Good for
- Teen (13–17), Student, Friend, Partner
- Interests
- Cycling, Running, Outdoors & camping
- Occasions
- Stocking stuffers, Secret Santa, Christmas
Something wrong with this listing? Tell us and we will check it.