The Military Smartwatch with a 55mm black case and black silicone band is designed for men by the brand Blackview. This smartwatch features a range of functions such as a fitness tracker, touchscreen display, blood oxygen and pressure monitoring, sleep tracker, and more. It is waterproof and compatible with both iOS and Android operating systems. With a sleek aluminum case and 1GB storage capacity, this smartwatch is a versatile and reliable accessory for everyday use.