Limited edition of 499pieces u boat watch chimera titaniumskeleton limited edition 8066 like most u boat watches you will never fail to make a lasting impression with the chunky 46mm grade 5 titanium case of the u boat chimera skeleton limited edition watch the case is designed to be completely durable and lightweight while the bezel and case back are locked together by external tubing to ensure absolute water resistance the dial of the u boat titaniumchimera skeleton limited edition w