USB Charging: The rechargeable light up dog collar does not need to be replaced with its own USB cable, which is energy-saving and environmentally friendly. It can be charged from any device in case the data cable is lost. Size: Size M Adjustable length: width 2.5cm, short 40cm, long 48cm, telescope range 8cm Note: Pay attention to your dog's neck circumference before purchasing! Color: orange, blue Weather resistance: The light emitting dog collar is not waterproof, light rain or daily sweat is not a problem, but you can't put the light emitting dog collar in water because it will damage the charger. Lightweight: The neon dog collar is made of tightly woven nylon fabric with a smooth handle that makes your pet more comfortable and also suitable for your dog. High-quality parts: Durable and reflective dog collar lighting with rust-proof D-ring to connect the dog leash, easy to wear on the dog's neck dog, with a lightweight quick release buckle, adjustable buckle on the side. Set: 2 x