The Gemini Xera bike light from Gemini was an 800 lumen bike light that they just upgraded to a 950 lumen light.Gemini Xera

It comes with a plethora of mounts and of course a battery 2600 mAh 2 cell battery or a 4 cell 5200 mAh battery and charger.
It has several brightness settings and is one of the more adjustable lights out there. It also has an interchangeable light insert that makes the beam standard or narrow.
This light can also be used a a headlight and comes with the strap to prove it, also 2 silicone o rings for the handlebars and an extension cable if you want to keep the battery in your pack or jersey.
All in all this is a great light set up for $110.00

Here is all the technical information from their site:

Small size. Incredible power.

At 950 lumens, the Gemini XERA LED Bike Light means serious business in the high-power light category. Driving this powerhouse is a single CREE XM-L2 U4 LED emitter – the most efficient, high power LED on the market.

The Gemini XERA is both lean and mean, weighing in at just 55g – fit for racing and fit for you.

Adjustable beyond low, medium, high modes.

There are ten brightness levels between 10-100% for your Low, Med, High and Flash modes. Each mode is programmable so you can to adjust your Low, Med, High and Flash modes to your own liking. Fine tuning your power levels allows you to take full control of your runtime.

By default, the XERA is set at Low 20%, Medium 60%, High 100% and Flash 60%. To reset your modes back to these factory settings, hold down the button for 10 seconds.

Handlebar and helmet mount included.xera1

A handlebar and helmet mount are bundled in the XERA Light Set for your night time activities. Use the silicone o-ring to mount the XERA onto your handlebar or your helmet. A head strap is also available as an optional extra.

The light for all outdoor activities.

The optional head strap takes your Gemini XERA beyond cycling and into other night activities like camping, night fishing, skiing or longboarding. With a powerful light mounted to your head, the possibilities are endless with what you choose to do with it.

Brightness 950 Lumens
Weight 55g Light Head
122g 2-Cell Battery
229g 4-Cell Battery
Modes Low / Med / High. Flash.
All programmable between 10-100%.
Material Hard Anodized Aluminum
Safety Charging and Thermal Protection
Low Battery Warning
In the Box XERA LED Light Head
High Capacity 2-Cell / 4-Cell Battery
Smart Charger
Built-in Handlebar Mount
Helmet Mount
Silicone O-Rings
Extension Cable

Run Time

XERA Light Set (2-cell)

Brightness Level Lumen Output Run Time
High 950 2 hours
Med 600 3 hours
Low 200 8 hours 30 mins

XERA Light Set (4-cell)

Brightness Level Lumen Output Run Time
High 950 4 hours
Med 600 6 hours
Low 200 17 hours



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