One size fits all, simply cut the silicone collar down to the required size. LED has three settings; slow flash, fast flash and constant. Rechargeable by USB, running time up to 2 hours. Visibility of up to 500m depending on outside conditions and charge level.
Great for slipping over the collar of your dog to keep them safe on dark roads or for keeping track of your dog whilst off-lead in early mornings or late evenings.