Will it fit over his normal collar?
It's worn as a collar in its own right. Most owners run it alongside a tag collar, or use it on its own for evening walks.
How long do the batteries last?
Longest on constant glow, longer again on flash. Replacements are CR2016 — any supermarket, about a pound for a pack.
Is it waterproof?
Splash and drizzle are fine. Don't submerge it, and don't let him swim in it.
Why two collars?
Two dogs, or one dog and a spare. Collars disappear in long grass and you'll be glad of the second one.
What size do I need?
Measure the neck and leave room for two fingers. XS 28–40cm · S 34–42cm · M 40–48cm · L 45–52cm · XL 52–60cm. If you're between sizes, go up.
When will it arrive?
7–10 working days, tracked. That's 2–3 days processing plus 4–7 days delivery.
Is it safe for my dog?
The collar is lightweight polyester webbing with a fibre light guide — no heat, no exposed electronics. It contains two CR2016 button batteries. Keep spare batteries away from children and pets: swallowed button batteries cause serious internal injury. Check the compartment is closed before each walk.
What if I don't like it?
30 days, full refund, unused and in its packaging. Email hello@obsidiapets.com.