DT Swiss
Urban Jungle
Benno
Swissstop
New Looxs
Vici
Unit1
Hamax
Halo helmets
Super compact and lightweight magnet-less cycling speed sensor. Translucent Composite Matrix construction with LED indicator. Simple installation that mounts to most hubs. High-tech dual Bluetooth system that can simultaneously pair with cycling computers and smart trainers. Features a replaceable CR2032 battery.
https://ride.lezyne.com/collections/gps-devices-sensors/products/pro-speed-sensor