Knog Frog Rear Bike Light 20 Lumens Rechargeable Abyss Grey
SKU code: BCP-KN13131
The Frog Rear is Knog's rebirth of its original Frog light: a 20-lumen rear light with Chip on Board LEDs, a curved lens for side visibility and an integrated stretch strap that mounts without tools. It's USB-C rechargeable and weighs 20 grams.
Highlights
- 20 lumens maximum output
- 9 modes, up to 60 hours run time (Eco)
- USB-C rechargeable (cable not included)
- IP65 water resistant
- Integrated strap fits tubes 22.2–32 mm in diameter
- 20 grams
Modes and run times
Knog's figures for each of the nine modes:
| Mode | Lumens | Run time |
|---|---|---|
| High | 7 | 3 hrs |
| Low | 1 | 15 hrs |
| Side Flash | 11 | 4 hrs |
| Full Bright | 20 | 7 hrs |
| Back To Front | 5 | 13 hrs |
| Front To Back | 8 | 6 hrs |
| Side To Side | 6 | 5 hrs |
| Rotation | 6 | 13 hrs |
| Eco | 4 | 60 hrs |
Operation and battery
One button does everything: a long press turns the light on or off, a standard press cycles through the nine modes, and a quick press while the light is off shows the battery level across the LED array in 20% steps. It charges by USB-C; the cable isn't included.
Compatibility & fit
The integrated silicone strap stretches around the tube and latches on the hook, so no tools or separate mount are needed. Knog lists a fit of 22.2 mm to 32 mm diameter; its quick start guide says the Frog fits a handlebar, seatpost or any tubular part of the bike up to 32 mm. This is the rear light only; the front Frog is sold separately.
Knog gives all its products a two-year warranty from the date of purchase, covering defective hardware, software faults and factory defects. It doesn't cover ordinary wear and tear or damage caused by improper use or accidents. This cover is in addition to your rights under the Australian Consumer Law. Keep your proof of purchase. For warranty support, return the product to Tune Cycles and we'll manage the claim with Knog's Australian distributor.
- 20 lumens max, Chip on Board LEDs
- 9 modes, up to 60 hrs (Eco)
- USB-C rechargeable, battery level indicator
- IP65 water resistant, 20 g
- Tool-free integrated strap, 22.2–32 mm
- Colour: Abyss Grey
| Brand | Knog |
|---|---|
| Model | Frog Rear Bike Light |
| Knog part number | 13131 |
| Position | Rear |
| LEDs | Chip on Board (COB) |
| Maximum output | 20 lumens |
| Modes | 9 |
| Run time | Up to 60 hrs (Eco mode) |
| Charging | USB-C (cable not included) |
| Battery indicator | Yes |
| Water resistance | IP65 |
| Fits | 22.2–32 mm diameter |
| Strap material | Medical-grade silicone |
| Dimensions | H 80 mm × W 35 mm × L 42 mm |
| Weight | 20 g |
| Operating temperature | -20 to 50 °C |
| Colour | Abyss Grey |
| SKU | BCP-KN13131 |
| Model # | KN13131 |
| Barcode # | 9328389031653 |
| Brand | Knog Lights |
| Shipping Weight | 0.0600kg |
| Shipping Width | 0.100m |
| Shipping Height | 0.060m |
| Shipping Length | 0.150m |
