Mandy Silicone Multi-Purpose Date Time Electronic Wrist Calculator Watch White Material: Silicone and Rubber Fashion design calculator watch and with its compact size for carrying easily and charming outlook. Two functions in one electronic wrist watch, ideal for businessman, housewife, students use etc. Watch calculator function - it can make operation of addition, subtraction, multiplication, division Watchband size: 22.5cm x 1.8cm Watch head size: 3.5cm x 5cm