Rear light IXXI - rechargeable by Busch + Müller

Busch and Muller IXXI rechargeable rear light

The snappily named 2C permanent is quite an unusual light (to us) - it is a bracket mounted rear light with built in reflector, which is powered by USB instead of replaceable batteries

We think it's called permanent as it mounts to the bike (rack or Brompton bracket) using two screws - -then the light itself snaps out of the mounting for recharging

Built in Z reflector for safety when the light is off / has no power / to comply with the highway code

It has a bracket which fits permanently to the rack (or Brompton reflector bracket) and can connect using 50mm or 80mm widths (Brompton uses 50mm)

Patented lens system creates two wide light areas from two high output LEDs

Power lasts for approx 15 hours at full power - as the power (from the lithium battery) starts to reduce, the light gradually dims

There is a battery power indicator on the light - when the light shows yellow, please charge

The battery charge indicator also shows the charging state - yellow means it is charging, off means it is fully charged

The light is removed from the bracket to charge (this allows access to the USB socket located on the back of the light)

Modes:

On (steady)
Off 

The pack contains:

Band to connect to seat-post - 22-35mm diameter seat posts are supported
Rear light 
USB charging cable
Fitting instructions

b + m part number: IXXI 383

Made in Germany
Approved for German road traffic regulations

Note: Packaging could change

Installation instructions

Simply mount to the seatpost using the band provided

See a review of the IXXI rear light on road.cc