Casio Edifice ECB-900DB-1B Bluetooth Solar Men's Watch

The Casio Edifice ECB-900DB-1B is a Bluetooth solar men's watch built for motorsport timing and daily wear. It pairs a stainless steel case and band with an analog-digital display, so you get hands plus a digital readout for stopwatch data. The watch suits drivers, travellers and anyone who wants accurate time without routine battery changes.

Tough Solar charges from sunlight or indoor light, and Casio quotes a power reserve of about six months in normal use or 19 months in power-save mode after a full charge. Bluetooth mobile link connects to a smartphone app for automatic time checks, summer time changes and access to more than 300 world time cities. The case measures 51.5 × 48 × 13.9 mm and weighs 163 g, so it sits large on the wrist. Water resistance is rated to 100 metres for swimming and snorkelling.

Key features and benefits of the Casio Edifice ECB-900DB-1B Bluetooth Solar Men's Watch

• Bluetooth mobile link: The watch connects to a smartphone to correct the time, including summer time changes. You can travel between time zones without resetting the hands by hand.
• 1/1000-second stopwatch: The stopwatch measures to one thousandth of a second and keeps up to 200 lap records, including average speed per lap. Drivers and coaches get a clear record of short, fast intervals.
• Smartphone app access: The app lists more than 300 world time cities and lets you adjust alarms and timers from the phone. This helps when you work across several time zones or change location often.
• Super Illuminator: Dual LED lights brighten both the hands and the digital screen when you tilt your wrist. You can read the display at night without pressing a button.
• Tough Solar power: A solar cell under the dial charges from sunlight or indoor light. Casio lists about six months of normal use on a full charge, or 19 months in power-save mode, so routine battery swaps are not part of ownership.
• Tachymeter bezel: The marked bezel helps you work out speed from a measured travel time or distance from a known speed. Drivers and athletes can make quick checks without opening the app.
• 100-metre water resistance: The watch is rated to 100 metres for swimming, snorkelling and everyday contact with water. It is not intended for scuba diving.
• Stainless steel case and band: The case and bracelet are stainless steel, which resists corrosion and suits daily wear. A one-touch 3-fold clasp opens with a simple press and holds the band securely.
• Mineral glass crystal: A mineral glass crystal covers the dial and protects it from scratches and minor knocks. It helps keep the display clear through regular use.
• Analog-digital combo display: Hands show the time while a digital screen adds stopwatch, alarm and other data. You can glance at the hands and read precise figures below.
• Accuracy of ±15 seconds per month: Without the mobile link, the watch keeps time to within plus or minus 15 seconds per month. Bluetooth sync corrects it when you want a closer match to your phone.

Who the men's watch is for

The Casio Edifice ECB-900DB-1B suits people who want a tough everyday watch with motorsport tools built in. It is a good match for drivers and riders who time laps, for travellers who cross time zones, and for professionals who like a large stainless steel watch with a digital screen. The solar cell and Bluetooth link reduce routine setting and charging chores. Its 100-metre water resistance also covers swimming and snorkelling, so you can keep it on for pool sessions and beach days.

• Timing laps or short runs at a track day, with 200 stopwatch records to review afterwards.
• Travel where you need to switch time zones and check a home city through the app.
• Daily office or site wear where a steel band and 100-metre water resistance are useful.
• Swimming or snorkelling sessions, as long as you stay within the 100-metre rating and do not dive.
• Gift for a driver or motorsport fan who likes analog hands plus digital data.

Less suitable if: you want a purely analog watch with no digital display, or you need a timepiece for scuba diving beyond the 100-metre water resistance rating.

Men's watch specifications

Using and caring for the Casio Edifice ECB-900DB-1B Bluetooth Solar Men's Watch

Keep the Casio Edifice ECB-900DB-1B Bluetooth Solar Men's Watch in regular light so the Tough Solar cell can charge. A windowsill or a bright room is enough for everyday top-ups, and the power-save mode helps during storage. Wipe the stainless steel case and band with a soft damp cloth after wear, especially after swimming, then dry it with a soft cloth. Avoid pressing the buttons underwater, and store the watch dry when you are not wearing it.

• Place the watch near a window for a few hours when the charge is low, then check that the hands and digital display are running normally.
• Rinse and wipe the stainless steel band after swimming to remove salt or chlorine, then dry it fully.
• Use the smartphone app for time zone and alarm changes rather than repeated button work, which keeps setup simple.
• Keep the watch away from strong impacts and harsh chemicals to protect the mineral glass and steel finish.

How to choose the right men's watch

Choosing a men's watch for motorsport and travel comes down to four factors. Size matters first: the Casio Edifice ECB-900DB-1B measures 51.5 × 48 × 13.9 mm and weighs 163 g, so it is a large watch that suits a wrist comfortable with a bold case. Power is next; its Tough Solar cell charges from light and gives about six months of normal use on a full charge. Check water resistance too, and this model is rated to 100 metres for swimming and snorkelling. Finally, decide whether you want Bluetooth and app access to more than 300 world time cities, which this watch provides.

Frequently asked questions

What is the Casio Edifice ECB-900DB-1B made of?

The Casio Edifice ECB-900DB-1B has a stainless steel case and band, a mineral glass crystal and an analog-digital display. The steel resists corrosion and the mineral glass guards the dial from scratches and minor knocks.

How big is the watch on the wrist?

The case measures 51.5 × 48 × 13.9 mm and the watch weighs 163 g. It is a large, substantial men's watch rather than a slim dress style.

How does the Tough Solar power work?

A solar cell charges the watch from sunlight or indoor light, so you do not need routine battery changes. Casio lists about six months of normal use on a full charge, or 19 months in power-save mode.

Can I swim with the Casio Edifice ECB-900DB-1B?

Yes, it is rated to 100 metres for swimming and snorkelling. It is not designed for scuba diving, and you should avoid pressing the buttons underwater.

What does Bluetooth add to this watch?

Bluetooth mobile link connects the watch to a smartphone app for automatic time correction, summer time changes and more than 300 world time cities. You can also set alarms and timers through the app.

How precise is the stopwatch?

The 1/1000-second stopwatch measures to one thousandth of a second and stores up to 200 lap records, including average speed per lap. It suits short, measured intervals such as motorsport laps or training runs.

How accurate is it without a phone connection?

Without mobile link, the watch keeps time to within plus or minus 15 seconds per month. Bluetooth sync can correct the time when you connect it to the app.