Features: This universal children phone watch wristband is made of quality dual-tone silicone material. The wristband comes in two sizes: 16mm and 20mm, making it suitable for children phone watches such as the public edition, 360, Zhanghang, Aiko, etc. With its durable construction, this wristband is perfect for active kids who love to play and explore. The comfortable and secure fit ensures that the watch stays securely on your childs wrist firmly. Perfect accessory for any kid phone watch, great replacement for your worn out, lost or broken part. Specifications: Material: Silicone Color: Black-blue, Black-pink(optional) Width: 16mm, 20mm(optional) 16mm Length: Approx. 10.6+6cm/4.17+2.36inch 20mm Length: Approx. 11+6.8cm/4.33+2.67inch Note: Watch strap only, smartwatch not included. Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1x Watch Strap