Gemini Xera 2 cell review£130.00

Super-compact mountain bike light

BikeRadar score4.5/5

Gemini are a Canadian lighting company that are new to the UK, but their tough, weatherproof Xera light is one of the best we’ve used.

The head unit is tiny at just over 50g, and it fits unnoticed onto bars or the included helmet and off-bike headband mounts, via a simple O-ring and hook attachment.

As it’s designed primarily as a helmet light the beam is focused and impressively far reaching, with no dark spots or irregularities – but not a vast amount of peripheral spread. An optional medium beam reflector is included if you want something slightly broader than the spot beam.

You can tune the run times and power outputs relatively simply, although the default high/medium/low settings worked fine for us. Run times are good despite the tiny, sub-150g ‘stick it under your stem’ hardshell battery, and you get an extension lead for headband/helmet use. 

Gemini also do a four-cell version for £150 that doubles run time for those who need a serious amount of range, or don’t like recharging as often.

Although it’s our first season with them in the field, weatherproofing and reliability have been excellent on all the Genesis lights we’ve used so far, which boosts already good value.

Gemini xera 2 cell beam shot:
Gemini xera 2 cell beam shot:

This article was originally published in What Mountain Bike magazine, available on Apple Newsstand and Zinio.

Guy Kesteven

Freelance Writer, UK
Guy started filling his brain with cycle stats and steaming up bike shop windows back in 1980. He worked the other side of those windows from '89 while getting a degree in “describing broken things covered in mud" (archaeology). Dug historical holes in the ground through the early '90s, then became a pro bike tester in '97. Guy has ridden thousands of bikes and even more components the world over since then and can remember them all in vivid, haunting detail. Can't remember where the car keys are, though.
  • Age: 45
  • Height: 180cm / 5' 11"
  • Weight: 68kg / 150lb
  • Waist: 76cm / 30in
  • Chest: 91cm / 36in
  • Discipline: Strict sadomasochist
  • Preferred Terrain: Technical off-piste singletrack and twisted back roads. Up, down, along — so long as it's faster than the last time he did it he's happy.
  • Current Bikes: An ever changing herd of test machines from Tri bikes to fat bikes and everything in between.
  • Dream Bike: His Nicolai Helius AM custom tandem
  • Beer of Choice: Theakston's Old Peculier (not Peculiar)
  • Location: Yorkshire, UK

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