This Minerva Box leather watch band is great for anyone who owns a Grand Seiko SBGA model. Whether you're going to a business meeting or a casual hang - out, it'll make your watch look even better. It fits well with various Grand Seiko SBGA models and is easy to change thanks to the quick - release feature. There aren't specific size or weight details given, but it's made from premium calfskin, so it's soft and comfortable to wear.