What is the meaning of each function of a clock?

	English term	Synonym [Derived terms / Abbreviations]	Definition
Time	seconds zero reset		Function that quickly returns the second display to zero. This function can also return the seconds to zero according to a time signal.
	hands reset to original position		Function that quickly returns the hour, minute and second hands to predefined position.
	quick correction of time		Function that quickly corrects gained time, or lost time by rotating the hands.
	quick correction function of time difference		Function that quickly corrects gained time, or lost time by rotating the hands.
	seconds hand stop		Function that temporarily stops the second hand by operating the crown or a button.
	dual time		Function that displays two different time indications.
	manual reception		Function that allows the user to receive a time signal to adjust the time by pressing a button whenever they want.
	regular automatic reception	Regular reception Regular automatic reception	Function that receives automatically a radio time signal to adjust the time at fixed conditions or hours.
	automatic tuning function	auto tuning	Function that automatically selects and receives a standard radio time signal with different characteristics.
	reception level display function		Function that displays the reception status of radio time signals.
	reception result confirmation function		Function that displays the results of radio time signal reception and time adjustment.
	reception ON/OFF function		Function that allows the user to enable or disable radio time signal reception.
	standard-time and frequency-signal emission	standard-time electric wave, or standard radio wave	Signal of coded standard time information transmitted through standard frequency.
		GPS satellite radio signal GPS radio signal	Radio signal emitted by a GPS (Global Positioning System) satellite.
	Fukushima low frequency office		Ohtakadoya-yama standard time and frequency (40 kHz) transmission station of the National Institute of Information and Communications Technology.
	Kyushu low frequency office		Hagane-yama standard time and frequency (60 kHz) transmission station of the National Institute of Information and Communications Technology.
	ON/OFF daylight saving time ON/OFF selection function		Function that allows the user to enable or disable daylight saving time.
	multiband		Function that receives multiple standard radio time signals.
			Function that checks the home position of the hand at fixed times and corrects it as required to maintain accuracy, for example, when the pointer is misaligned due to impact or magnetism.
Time measurement	time preselecting device		Device that can measure time with a rotating bezel or number display.
	sound timer		Function that indicates time at a set interval with an audio signal.
	auto chronogragh auto chrono		Function that includes timer and stop watch characteristics to automatically start measuring time when the timer reaches zero.
	split time counter		Function that measures several elapsed times in order with the same start, and displays them without stopping.
	lap time counter		Function that allows the user to start measuring time from the end of the previous time measurement.
	tachymeter		Function that measures the time traveled over a given distance, and calculates and displays the approximate average speed.
	log data		Record of diving information, such as dive start time, dive end time, maximum depth, dive time, number of dives, average depth, and date.
Calendar	calendar		Function that displays, the date, the day of the week, the month, the year, etc.
	auto calendar		Calendar function that does not require date adjustment at the end of the month (except for the 29th of February on leap years).
	full auto calendar		Calendar function that does not require date adjustment at the end of the month (including the 29th of February on leap years).
	moon phase		Function that displays the phase of the moon.
	quick calendar correction		Function that can quickly adjust the date, the day of the week, the month, etc.
	reverse calendar		Function that displays the date within a circular sector with the day hand returning, manually or at the end of the month, to the first gradation.
Alarm	daily alarm		Alarm that rings every day at the set time, unless it is canceled.
	one-shot alarm		Alarm that deactivates automatically after it went off once.
	snooze		Alarm that rings again after a short period when stopped.
	multi alarm		Alarm function that allows the user to set multiple set times.
	chirping alarm		Alarm that emits a sound generated by an electronic circuit.
	bell alarm		Alarm that rings like a metal bell struck continuously.
	synthesized sound alarm		Alarm that emits voices or onomatopoeic words generated by an electronic circuit.
Time indication	acoustic information		Function that emits a sound to indicate each hour, each half hour, each quarter, or each minute.
	striking shut off		Function that can stop the audio indications automatically or manually at a fixed time.
	repeater		Function operated by the user that emits sounds to indicate the current time (hour, half hour, quarter, or minute).
	grand strike		Function that automatically indicates the current time with a sound each hour or quarter, and that also can be operated by the user like the repeater.
Miscellaneous	automatic		Function that automatically winds the mainspring with the moves of the wrist.
	shock-absorber		Bearing that protects the pivots from shocks.
	system reset		Function that initializes each function of a timepiece that uses an integrated circuit, like a CPU, this function is used when replacing the batteries or when a problem occurs.
	mode		On timepieces with many functions, the status used to display and operate each function, such as time indication, time measurement, or alarm.
	auto return		Function that automatically returns the timepiece to the basic mode from a different mode when no operation has been performed for a fixed period of time.
	power reserve indicator		Function that displays the charge level on quartz timepieces that use a battery charger.
			Function that displays the mainspring winding level on mechanical timepieces.
	battery life indicator		Function that indicates when the battery power is low and when it is time to replace it.
	rhythmical motion		Function that, automatically or through a user operation, plays a melody and moves the hands accordingly.
	sweep motion second sweeping motion second		Function that moves the second hand seamlessly.
	step motion second stepping motion second		Function that moves the second hand with a step between each second.
	sound monitor		Function that emits an alarm sound as needed through user operations.
	pace maker		Function that emits sounds at time intervals set by the user.
	beep sound		Function that indicates to the user with a sound that the operation, such a press on a button, has correctly been performed.
	automatic power generating system		Function that automatically generates energy and charges the battery each time the timepiece moves.
	overcharge prevention function		Function that prevent overcharge of rechargeable batteries.
	energy depletion forewarning function		On timepieces using battery charger, function that indicates to the user that the battery power level is low or that it will become flat soon and the timepiece will stop.
	power save function energy save function		Function that puts the timepiece in power saving mode by turning off some functions such as time display.
	light		Function that illuminates the dial or the LCD panel using electroluminescent lights or LEDs.
	charging time		Estimated time needed to charge the battery on timepieces using a battery charger.

(Note): The above information applies to the members of
the Japan Clock & Watch Association and their products.