Astrolux SL01 https://www.banggood.com/custlink/GvvchhSaQQ (affiliated link), or go to Banggood and search for ID: 1966569
The Astrolux SL01 has the following specs:


I tested the SST40 LED: @5400K and it has a CRI of @63


USB-C for fast charging and for remote control switch (sold separately)
Wide flood beam with hood to prevent blinding people (anti-glare prevention).


You can see the hood in action.
You can attach the SL01 on the back, but this light is marketed as a front bike light.
Smart mode. Light sensor to activate flashing mode if brighter than 100lux or 500lm standard mode <100lux. It also has a motion sensor that puts it to sleep after 120s of no activity and instant smart mode if it does sense motion.
Pros:
- Budget friendly
- USB-C fast charging
- Not cool white (personal preference - cool white is more harsh on my eyes)
- Easy mounting/removal and the light can swivel 360 once mounted and the mount itself can be rotated 360 (loosen screw and rotate mount) once mounted.
- Smart mode and anti vibration is pretty cool!
Cons
- Hood could stick out more?
- No USB-C Out (for charging devices)
- Doesn't include the remote switch :P
- Low CRI
- Built-in battery