POWER BATTERY: Japanese Movement, provide precise and accurate time keeping. Back-up-battery | MATERIAL & UNIQUE DESIGN: High quality silicone strap, It uses healthy environmental protection material,comfortable and environmental friendly through international CE certification. With 3D cartoon design, every watch has their unique style. Each cartoon image is lively and interesting. | WATERPROOF: Daily waterproof function. The watch can be worn when children washing thier hands or playing with water . But we do not recommend wearing this watch when swimming and bathing, because it does not have the depth waterproof function. | TARGET AUDIENCE: Watch is adorable especially for a cartoon enthusiast. It is well made and the band has enough holes to fit a small wrist.Kids can Learn to Tell Time in a Fun and Unique Way - Recommended for Ages 3 to 8 ,Suitable Wrist Length: 12.5cm -16cm / 4.92inch - 6.3inch | AFTER-SALES: Yours satisfation will be a great motivation for us. we would do our best to offer you a pleasure shopping experience on our shop,if you have any concern about our product and service,please do not hesitate to contact us via email.