Waterpoof 100M WR Digital Watch with Soft Silicone Strap. Our popular aqua colour is back! Kids love this new shape digital watch just released by Cactus Watches Australia - case size 36mm, suitable for boys and girls ages 9 and up - it's a perfect mid-size LCD watch. The strap design is super comfy, and its 11 tech features all the essentials including an EL backlight. Best of all this watch is also waterproof 10 ATM - making it fine for swimming in the pool or at the beach.