21jewels机芯,21jewels手表

我买了一款表,机芯上写twenty-one 21jewels miyota co japan是什么
劳力士twenty–one 21jewelsmiyotaco8n24japan
original miyota movement 8219 mechanical 21 pcs jewels calendar
seiko 21 jewels 7s26a divers movement - ready for use - 108374
21jewels日本理光全自动机械男表