Design Water resistance: 5 ATM Band material: Silicone Band colour: Black Shape: Round Buckle colour: Black Closure type: Single prong strap buckle Colour name: Slate Market positioning: Smartwatch Waterproof up to: 50 m Waterproof: Yes Watch case material: Fibre Reinforced Plastic (FRP), Stainless steel Watch case size: 40 mm Watch case colour: Black