XD-15 Pro bearings feature deep-groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity

Bearings: 4-piece sealed cartridge bearings

Tailored for a slimmer look

Battery type: lithium polymer

The zip-up compression sock is easy to take on and off

Magicshine SeeMee 400 Rear Light - Rear - 400 - Black PLP|Riding Style XD-15 Pro bearings feature deep-grooveThe SEEMEE 400 is a completely upgraded version of the SEEMEE 300: 360 follow light + high transparency optical light guide strip to achieve no blind spots and strong warning; upgraded with FTR multi light interconnection and team synchronised flashing technology, and also supports intelligent brake warning vibration wake up, ANT + bike computer pairing and light control, empowered by multiple core black technologies, making it smart and convenient,