Reliable visibility. Comprehensive overview - with the Varia RearVue 820 bike radar with very bright rear light. The radar warns you of approaching vehicles on compatible Edge bike computers, Garmin smartwatches or in the Varia app on your smartphone. The Varia RearVue 820 uses innovative radar technology to recognise the size of the vehicle and visually shows you the overtaking distance. Whether you are travelling at the same speed or overtaking - vehicles are detected from a distance of up to 175 metres. The very bright rear light with various light modes is visible from distances of up to 2 kilometres and has an integrated brake light with a striking flashing pattern. This warns other road users when you slow down or stop.
Lighting type | Radar rear light |
Power supply | Rechargeable battery operated |
Installation location | Bike frame, Saddle, Seat stay |
USB connection | USB-C |
Luminous flux rear light | 25 lm |
Weight | 90 g |
Item number | 66964810 |
Manufacturer | Garmin |
Category | Bike lights |
Manufacturer No. | 010-03180-00 |
Release date | 4-2-2026 |
Colour | Black |
Exact colour description | Black |
Material group | Plastic |
Material | Plastic |
Lighting type | Radar rear light |
Power supply | Rechargeable battery operated |
Installation location | Bike frame, Saddle, Seat stay |
USB connection | USB-C |
Mounting type | Clip holder |
Lamp operating mode | Constant light, Flashing light |
Battery life (full power) | 6 h |
Battery life (flashing mode) | 15 h |
Number of LEDs | 1x |
Luminous flux rear light | 25 lm |
Lamp operating mode | Constant light, Daytime running light, Flashing light |
Battery category | Device batteries |
Battery type | Li-ion |
Battery life (full power) | 10 h |
Battery life (eco mode) | 15 h |
Battery life (flashing mode) | 24 h |
Country of origin | China, Taiwan |
CO₂ emissions | 1,7 kg |
Climate contribution | EUR 0,12 |
Scope of delivery | Charging cable, Documentary, Mounting kit, Varia RearVue 820 |
Rearlight length | 98.90 mm |
Rearlight width | 25.90 mm |
Rearlight height | 43.20 mm |
Weight | 90 g |
Product Safety |
Length | 14.10 cm |
Width | 7.50 cm |
Height | 6.80 cm |
Weight | 256 g |
How often does a product of this brand in the «Bike lights» category have a defect within the first 24 months?
Source: GalaxusHow many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: GalaxusHow often is a product of this brand in the «Bike lights» category returned?
Source: GalaxusThe Varia RearVue 820 is Garmin's StVZO-compliant radar taillight. In terms of maximum brightness, some of the competing models in this test offer significantly more. You also have to do without a brake light and automatic lighting. However, the radar function offers unique additional features...
