![]() ![]() Two Citizen E2100 chronographs side-by-side: the CTZ66-0471 “Bullhead" (left) and an AV0037-55 (right). On the opposite scale, Citizen produces high end quartz calibers for their Chronomaster models (also dubbed “The Citizen"), which is a high accuracy, thermocompensated quartz watch and complicated quartz movements for their exotic Campanola line. Citizen also has a sub-brand under the name “Q&Q" which are very low cost quartz watches targeted to mostly Asian and Middle Eastern markets. The company also makes low, medium and high grade quartz movements through its Citizen Miyota manufacturing facility. Most of their automatic movements are found in their NY-series diver’s watches and some of, their Oxy sub-brand watches. □Ĭitizen has been concentrating on their Eco Drive range of watches and it looks like they have not only perfected their solar powered watch technology, they are also producing more and more models based on their Eco Drive movements.Īlthough Citizen still makes automatic watches it appears that (unlike Seiko) they’re not interested in pushing their automatic movements into the high end range bracket. Let’s examine the merits and demerits of both animals. ![]() The most glaring difference between the Cal 2100 and the 7L22 is that the former is solar powered while the latter is a motion powered movement. These two hybrid calibers are also mainstream calibers and both companies have manufactured numerous models based on them. Why am I comparing these two movements? Well, for starters they are both quartz-controlled watches with unique, mechanically actuated chronograph functions. Try not to slip the tool and scratch the coil.Being an owner of both the Citizen Promaster Eco Drive E2100 and Seiko Sportura 7L22 Kinetic chronograph, I thought a comparison between these two distinct yet similarly featured movements would make an interesting subject. The arm has a spring-like resistance and should return to place on its own, as long as the battery is in place and not blocking it. When installed a new cell, hold the arm out of the way and simply wedge the new battery under the tab on the left, press down on the battery and bring the arm back over. It moves slightly to release the battery. The arm with the hole in it is what holds the battery in. If it is your first time changing a battery on a Miyota quartz movement, just take your time. Changing the Batteryīelow is a quick guide to performing a DIY battery change on your 2105 powered watch. When doing this, the seconds hand will stop and the power consumption will be limited. There is a battery saving (aka hacking) mode by pulling out the stem into time setting mode (position II). The battery is said to last up to 3 years. The caliber 2105 takes an SR626SW watch battery. Miyota states the accuracy of this movement to be +/-20 seconds/month. There is also a high hand verion (caliber 2117) for watches with deep dish dials and thick cases. There is also a similar caliber 2115, with the main difference being that the 2105 shown here has a day-date, the 2115 only has a date. 2105-2QA – English panoramic day at 12:00, date at 6:00, black text on white background.2105-20Q – English Spanish day-date at 6:00 (vertical stack), black text on white background.2105-2RA – English/Spanish day-date at 3:00, black text on white background.2105-2AN – English/Japanese day at 3:00, date at 6:00, black text on white background.2105-2AK – English/Arabic day-date at 3:00, black text on white background.2105-2AE – English/German day-date at 3:00, black text on white background.2105-2PKA – English/Arabic day-date at 3:00, white text on black background.Typical minimum order quantity (MOQ) being 1,000 pieces, with a lead time of 2 months. 2105-2AQ – English/ Chinese day-date at 3:00, black text on white backgroundĪll of the others are special order only.2105-20A – English/Spanish day-date at 3:00, black text on white background.Only two are readily available for order: Some of the topics covered in this caliber listing:Īlthough this is a low cost quartz movement, there are at least 9 configurations available from Miyota. ![]()
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