This collar is cuttable so you can easily adjust the length according to your dog's neck size to fit all dog breeds. The dog light-up collar is made of silicone, which is very soft and . The new environmentally friendly TDR can be seen in the lamp tube, with a built-in 5050RGB color light strip. The USB Rechargeable Dog Light Collar has a 450 mAh battery. 1 hour of charging time gives you 6-8 hours of flashing use. The LED dog collar comes with multiple modes. Press the switch to switch to red, green, purple, yellow and colorful multi-color flashing modes. Colour:White Material:Silica gel Size:Length:65cm Package Contents: 1 * collar 1 * charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.