The Merry & Bright LED Light-up Christmas Tree Pet Charm is a festive accessory for dogs, featuring 3 different LED settings to bring a sparkle to your furry friend's collar. This unisex charm is designed with a cute Christmas tree shape, bringing a touch of holiday cheer to your pet's outfit. Made in China, this unit is a fun and stylish addition to your pet's wardrobe during the festive season. TO ACTIVATE THE CHARM PRESS / PUSH THE CASING FOR 3 SECONDS.