Citizen, Casio and Seiko are known globally for their watch making. What's interesting is each of these brands have their own unique trademarks and naturally watch aficionados have their own preferences when it comes to them.
Citizen is known for its 'Eco-drive', Citizen says that the Eco-drive watches use a micron-thin disc of amorphous silicon that converts light energy into electrical energy, beneath the dial. Basically it means that an Eco-drive watch can be charged by light. There isn't a requirement of changing the battery when it runs out, somewhat like an automatic watch.
The titanium lithium ion battery boasts to be able to last a lifetime. After 20 years, it should still retain 80% of its ability to be recharged. To charge the battery, just place your watch at least 50cm away from a light source, simple.
A popular is the Citizen Eco-drive Promaster Scuba Diver.
Casio took over the world with its introduction of G-Shock, the ultimate tough watch. Based on a 'Triple 10' concept, the G-Shock was created to have a 10-meter free-fall endurance, 10-bar water resistance and a 10-year battery life.
Over 30 years ago, a watch that never breaks was created. Known to be one of the toughest watch, the G-Shock would resist high centrifugal and impact forces & high water pressure. The rest was history.
One of the popular picks is the DW5600. So much so that today, there are many brand collaborations Porter, SBTG & Pigalle to name a few.
The newly released GMW-B5000 gets a special mention from us. Full metal, in silver & gold.
Last but not least, Seiko has been known for developing their own in-house automatic movement - the 7S26 and now the NH35. The movement features 21 jewels, -20 to +40 seconds/day and a beat rate of 21,600 bph. It is a very stable movement at a very attractive price.
The Seiko in-house movement is often talked about and compared to the its Swiss counterpart, the ETA.
Needing no introduction, the SKX007 is favoured by many Seiko fans around the world.