Seiko GS 5646-7010 | Chrono24.co.uk,Seiko New Belt SEIKO GS HI-BEAT 5646-7010 Day/Date W/R AT Men's Watch From JAPAN X937,Seiko GS 5646-7010 | Chrono24.co.uk,Vintage Grand Seiko Hi - Beat Hands On and Introduction - 5645 - 7010,1973 Seiko GS ref. 5646-7010