Measuring Capacity: 24 hours, Measuring Mode: Elapsed time, Measuring Unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) The watch is equipped with energy-saving Bluetooth® technology, which offers power-saving data transfer at the push of a button. The watch can connect to a smartphone wirelessly via Bluetooth®, enabling access to a wide range of useful functions. The top bezel has been given five different finishes, while the middle bezel has been given four different finishes, which creates an elegant effect and changes the appearance of the texture of the metal depending on the viewing angle. Misplaced your smartphone? All it takes is the push of a button on your watch and the smartphone sounds an alarm.

And there’s more good news. The movement has an approximate operating time of seven months on the rechargeable battery. And it’s accurate ±15 seconds per month when there’s no mobile link function and it has to work all by itself. When connected with the phone, it uses automatic time adjustment, and it runs spot-on. The movement will also last for 18 months on its rechargeable battery when it’s “hibernating” in total darkness with the power save function on after a full charge.With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date. If you require an extra large bracelet or you are in need of additional links these may be supplied at an additional cost.

Casio did a great job in reducing the size of the guards around the stainless steel buttons that are slim yet easy to operate. It makes the GST-B400 look less like an instrument. The top bezel shows no less than five different finishes, and the middle bezel has four different finishes. It sounds like a lot of decoration (and it is), but the result is subtle and brings a richness to a watch that is not only for the rich. A high-capacity solar-charging system harnesses the power of any light source for reliable watch operation with minimal impact to the environment. In terms of design, the number of button guards has been reduced as much as possible, enabling the use of large stainless steel buttons that are slim yet easy to operate. The complicated dial gives the watch its distinctive utilitarian appearance. The watch features a digital display.The lower profile is a result of a newly designed module that is smaller with less components, combined with a high-density mounting with a flatter layout. With two analog hands, the Tough Solar-powered GST-B400 also consumes 55.7% less power than the GST-B200, and this allows for a new dial design with a metallic texture. For the GST-B400AD and GST-B400BD models, the dial is treated with a multilayer vapor deposition to create a vividly colored dial. I have a confession to make. When it comes to electronic watches with a gazillion functions, my mind goes blank. I’m not like a good friend of mine who practically lives for gadgets. He loves to try out everything, to dive deep into every single thing an electronic device can do. His Apple Watch holds no secrets from him. I, on the other hand, hate setting up electronic things. Think smartphones, TVs, laptops, and also electronic watches. I like my things mechanical. Mechanical watches, of course, but also other stuff that works with nuts and bolts and cogs and stuff. I love working on my racing bike, for instance. Changing the cassette, adjusting the gears, replacing the chain and cables, setting up the brakes — proper Zen stuff. When objects start bleeping when you touch them, I get grumpy.