Hi-Beat 36000 GMT SBGJ273,Seiko Wired Tokyo Sora Solar AGAD094,In 2022, Grand Seiko launched its most complicated watch ever, the Kodo Constant Force Tourbillon. Translating from the Japanese word for “heartbeat,” the Kodo made horological history by combining a constant-force mechanism,Grand Seiko Hi-Beat 36000 SBGH299,Mechanical Hi-Beat 36000 GMT