Lum-tec B18 Combat Bronze 4 straps included:Black heavy NATO with bronzed rings. OD green heavy NATO with bronzed rings. White heavy NATO with bronzed rings. Aviator style riveted custom leather strap with bronzed rivets and buckle. 52mm lug tip to lug tip Miyota Japan 9015 28,800 BPH automatic movement with handwinding and hack feature. Solid CuSn8 bronze case. 13mm thick