Item Type: Binary Watch Product Material: Metal, Silicone Shell Size: Approx.35 x 47 x 12mm / 1.4 x 1.9 x 0.5in Strap Length: Approx.263mm / 10.4in Ships With Built In Battery, Battery Battery Type: Button Battery Battery Model: CR2302 Battery Capacity: 240mAh Package List 1 x Binary Watch 1 x User Manual Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1Crab Shape: Innovative and unique Crab shape with the concept of a crab case. 2Easy To Wear: One piece silicone strap, beautiful black glossy alloy case, more convenient and sturdy to wear. 3Precise Original Numbers: Black Coated Metal Case, Precise Original Number Movement and Keeps Time Well. 4Stylish And Beautiful: Premium electronic components, stylish watch, binary time mode display. 5Color LED Digital Display: This stylish LED timepiece is guaranteed to attract attention and questions wherever you go