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Product guide

Magicshine SEEMEE 50 V2.0 UK USB-C Rear Bike Light, 50 Lumens

USB-C: Magicshine SEEMEE 50 V2.0 UK is a compact rechargeable rear bike light rated at up to 50 lumens, with five modes and an IPX6 claim. Its lower output and five-mode options suit riders seeking a rear visibility light, while its claimed longest runtime applies to Eco Flash rather than every setting.

At a glance

  • Five lighting modes are listed, with mode-specific runtime claims from 3 to 30 hours.
  • The stated maximum is 50 lumens, available in the Day Flash mode specification.
  • USB-C charging, a battery indicator, mode memory and a lock feature are claimed.
  • Silicone-strap installation is described for a seatpost or saddle rail without tools.
  • IPX6 water resistance is claimed.
Price
£23.98Save 20%

Reference price: £29.99

Price checked: 12 Nov 2026

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Often bought together

Pros and cons

Pros

  • Five listed modes give riders different flashing and steady-light options.
  • The manufacturer lists USB-C charging, a battery indicator and a lock feature to help manage charging and prevent accidental activation.
  • The described silicone strap allows tool-free seatpost or saddle-rail installation.

Cons

  • The maximum output is 50 lumens, so buyers wanting a higher-output rear light should look for a different configuration.
  • The longest stated runtime is for Eco Flash. Other listed modes have shorter runtimes, including 3 hours for High mode.

Technical specifications

28 specifications
Identity
BrandMagicshine
ModelSEEMEE 50 V2.0 UK
Power and battery
Power configurationBattery Powered
Battery capacity430mAh
Battery voltage3.7V
Charging connectionUSB-C
Charging time2 hours (5V, 1A)
Light and operation
Maximum output50 Lumens
Light sourceCOB LEDs
Number of modes5
Low mode output and runtimeLow(6lm,6h)
High mode output and runtimeHigh(15lm,3h)
Night Flash output and runtimeNight Flash(6lm/15lm,7h)
Day Flash output and runtimeDay Flash(0/50lm,10h)
Eco Flash output and runtimeEco Flash(0/3/0/10lm,30h)
Visibility angle260°
Visibility distance1000 meters
Battery indicatorGreen 100%-21%, Red 20%-11%, Flashing red 10%-1%
Dimensions and installation
Mounting types listedSeatpost Mount, Seat Mount
Dimensions listed6.5L x 1.4W x 2.7H centimetres
Weight0.99 oz
Materials and protection
Water resistance listedWaterproof
Material listedPlastic
Body materialPC+ABS
Lens/reflector typePC optical lens
Drop test1 meter
Other
ColourBlack
Warranty description24 months

What to know before buying

Listing details to confirm

The listing details are inconsistent: the title and detailed specification give 50 lumens and IPX6, while the general details say only Waterproof. Dimension and weight figures also use different formats in the description and details, so check the selected listing for the intended measurements. The 30.5-hour claim is not the same as the mode table's 30-hour Eco Flash runtime. FTR syncing requires compatible Magicshine front and tail lights and a separately sold MJ-6558 remote.

What’s in the box

  • SEEMEE 50 V2.0Included
  • Silicone strapCheck selected pack
  • USB-C charging cableCheck selected pack
  • User manualCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

  • Cyclists wanting a USB-C rechargeable rear light with five stated modes and a compact listed size.
  • Riders who can use a seatpost or saddle-rail strap mount and want mode-specific runtime information.

Less suited to

  • Riders who need more than the stated 50-lumen maximum from their rear light.
  • Buyers relying on the longest runtime in a brighter mode, since the 30-hour figure is specified for Eco Flash.
Magicshine SEEMEE 50 V2.0 UK USB-C Rear Bike Light, 50 Lumens · photo 2
Additional product photo 2

Customer reviews on Amazon

4 / 5 · 42 ratings
  • 5 stars54%54%
  • 4 stars21%21%
  • 3 stars5%5%
  • 2 stars9%9%
  • 1 star11%11%

The supplied evidence contains aggregate ratings but no written customer feedback, so it does not establish specific praised features or complaints. The overall rating is positive-leaning but includes a notable lower-star share. Buyers should weigh that broad, limited signal alongside the listing's mode-specific runtime claims and modest 50-lumen maximum.

Frequently asked questions

How bright is the SEEMEE 50 V2.0 UK?

The listing gives a maximum output of 50 lumens and specifies that output in Day Flash mode. Other modes have separate output and runtime claims.

How long does the battery last?

Runtime varies by mode in the description, from 3 hours in High to 30 hours in Eco Flash. A separate feature claim says 30.5 hours, so treat that figure as inconsistent with the mode table.

Can it be mounted on a saddle rail?

The listing describes a silicone strap for either a seatpost or saddle rail. Confirm the mounting arrangement suits your bike.

Does it sync with a front light or remote?

FTR LightSync is described for pairing with compatible Magicshine front and tail lights. The MJ-6558 remote and front light are stated to be sold separately, and the remote cannot pair with the tail light alone.

Magicshine SEEMEE 50 V2.0 UK USB-C Rear Bike Light, 50 Lumens · photo 3
Additional product photo 3

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