Difference between Casio EF 554D and EF 554SP

It's all about the same, what kind of coating does the sp strap have, but ** it's a few hundred oceans away! I recommend the EF-554D

Did you buy it over the counter??? The real steel strap will not oxidize, and the all-stainless steel strap will have scratches at most! Now there are a lot of fakes in the 524 and 521 models.

Casio Watch Collection: EDIFICE Model: EF-545D-1A

Function: 100-meter waterproof stopwatch multi-function alarm.

This is a Casio chronograph watch.

To put it simply, the three small dials in the dial represent the seconds and minutes function.

And the elongated hands of the large dial are not seconds but chronographs.

For example, it is used to test the pulse, breathe, etc.

The way to use it is the three buttons on the right side of the large watch face.

If you want to use the chronograph hand, press the top button on the right.

The chronograph hand starts to move, and if you want to stop, press the top button on the right.

If you want to restore the chronograph hand (the position at 12 o'clock), press the button at the bottom of the right side of the large dial.

Be sure not to start and stop the button on the right side of the chronograph hand, and never press the top button when the chronograph hand is running.

And pressing the restore button directly at the bottom will cause great damage to the movement!!

The middle on the right side is the faucet that adjusts the date and time.

Unscrew it clockwise downwards and gently pull out one section of the faucet to adjust the date, and then open another section to adjust the time (the adjustment function of the mid and last gear is different depending on the brand, but it is roughly the same).

Do not set the time at 21:03:00 in the evening, as this will affect the accuracy of the watch and will cause errors.

For Casio Casio For EFR-550 Watch Battery Caliber No. 5490 Original Electronics 2 Capsules [** ** Brand **] - JD.com.

Casio Watch EFV-540, Movement Code: 5563.

Battery model used: SR920SW (one silver oxide battery).

The service life is about 3 years.

The four digits on the back are just numbers.

It's not a serial number.

The serial number is usually invisible inside the movement.

If you buy from the Internet, look for a reputable seller.

Generally, the products of diamond sellers are still guaranteed, they will not ruin their reputation because of buying fakes, and the biggest advantage of buying online is that it is cheap, and it can generally be cheaper than 200 yuan, but it cannot be guaranteed nationwide.

If it is repaired, it can only be sent back to the seller, and you and the seller will each bear half of the shipping cost, but the quality of Casio is still guaranteed, and good luck.

The card watch is easy to distinguish Generally, high-end electronics like Pro Trek, as well as five-motor machinery and radio waves, are not fakes Because the technical content is high and the imitation cost will not be lower than the original, so there are no imitations and the low-end imitation is printed with blurred handwriting The color is not right The selection of materials is rough There are many burrs The weight is too light There are no patented functions of the card watch The things on the desktop are mostly furnishings It is easy to identify The watches of Seiko and Nishitetsu are also easy to see with the above methods.

ps: A model of card watches, no matter which region it is sold, will only be assembled or produced in one place Therefore, parallel goods flow from Hong Kong to the mainland In Hong Kong and abroad, card watches are low-end products Very cheap Generally, Hong Kong businessmen get card watches from abroad are mainland three-fold** and then resold to mainland parallel traders is 5% off Mainland parallel traders sell us at a 6-7 discount ** So it's very cheap But the quality is exactly the same Because the origin of the materials are the same First is the identification of the brand, currently on the market.

The imitation of imported watches mainly includes Swiss, Japanese and American products, and most of the counterfeit and counterfeit brands appear in the following brands, such as Oriental, Citizen, Seiko and Casio in Japan. Rolex, Tudor, Piaget, Sergeant, Rome, West Malaysia, Orma, Longines, Mido, Omega, Club, Inag, Nevida, Whiteland, Rado, Tissot. The second is the identification of the appearance and movement.

Appearance inspection, the trademark and brand marked on the dial and back cover of the genuine watch are clear and complete, the actual number of diamonds of the movement marked on the dial is consistent, the material indicated on the back cover is consistent with the material used in the case (the all-steel case is bright and dark, and the semi-steel case is bright and white), the surface glass is smooth and bright, the outer edges and corners of the case components are not sharp, and the plating has no air bubbles and does not fall off. The trademark and brand words on the dial and back cover of counterfeit watches are blurred, and the number of diamonds marked on the dial does not match the actual number of diamonds in the movement. Check the movement, the balance wheel of the genuine watch is gold-plated, the white one is an impostor, each axis of the movement mostly has a ruby or blue gem shock absorber is genuine, in the sales ** is significantly lower than the market price and there is no laser anti-counterfeiting mark, the invoice content is incomplete should be extra careful.

It's better to ask the staff of the manufacturer to distinguish the authenticity of this kind of thing, and they are the most authoritative. You can search for "Zhuome.com", log in to the group of Casio customer service platform and chat with them, you should be able to gain something I wish you a satisfactory answer.

Casio Casio Edifice Three-Eyed Time Trial Racer Men's EF-527D-1A Market Price: Yuan Listing Time: EDIFICE Series Grand Theft Auto Professional Tournament Entertainment Freedom Rock Helper Three-Eye Chronograph Racing Watches Multi-function Analog Watches Men's 1 20-second watch, rotatable scales, and sleek cut strap for added comfort.

The dense digital shape dial shows more professional performance, allowing you to really feel the speed and freedom of the racing track. Simple function Water resistant 100 meters 1 20 seconds horse watch function measurement upper limit: 11:

59'"Measurement mode: Elapsed time and date display time function: 3 stitches:

Hours, minutes, horse watch second hand 3 turns: second hand horse watch 1 20 seconds, horse watch hour, minute strap Material: reinforced stainless steel clear core difference accuracy:

20 seconds per month Battery life: Approx. 2 years (with SR927W) Dimensions: 51 mm Weight:

157 g

National unified price: 1580 yuan, but if there is a discount card that can be discounted, be careful but. Casio's table can only be discounted at a minimum of 9%, and if there are more, you won't give the invoice to the finch! (Japanese goods are lacking in virtue) it is recommended that you buy Rolex.