Garmin
Garmin Varia RearVue 820 review: a genuinely next-gen bike radar
· By Endurance Wire
You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test. By Simon Fellows Published 17 April 2026 In Reviews Brand spanking new for 2026, the Varia RearVue 820 has quite the reputation to live up to – its predecessor, the RTL515 , was widely lauded as the gold standard among the best radar bike lights when it was launched in 2020. So much so that, for years, it was the only radar I ever saw, blinking from the seatposts of safety-conscious cyclists.
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