It depends on the make and model of the clock. Some other features could be;
The day and date.
Temperature.
Moon phase.
Time in other zones
An azan clock is a clock which plays the azan (Muslim call to prayer) at the time of a prayer. It has all the features of a normal alarm clock too & you can set the clock to the prayer times in your locality.
There are a large variety of different features that make time clock systems tamper proof. These features include, but are not limited to, radiation and self destructive techniques.
The iPhone comes with a clock app already installed that has an alarm clock features. This is the best alarm clock that I have found so far. Other popular alarm clock apps are:CARROT Alarm - Talking Alarm ClockWake Alarm ClockSpeakToSnooze ProSleep Cycle Alarm ClockWake n Shake Alarm ClockRise Alarm Clock
A clock radio and an alarm clock are two very similar things which provide some of the same functions however they differ in their features. An alarm clock is a basic clock which has an alarm function and a clock radio combines the use of an AM/FM radio and an alarm clock.
The Sangean Silver Atomic clock features both analog and digital displays.
Sony has several clock radios out on the market today but their most popular one is the iPhone clock radio that features an LCD screen.
When shopping for an outdoor clock, you should make sure that is is made out of a sturdy, weather-proof material, such as cast-iron or aluminum with weather-proof finishes. Other things to look for in an outdoor clock are a thermometor and humidity gauges and large, easy to read numbering.
An electric clock typically uses electrical energy to power its internal mechanism. This energy is converted into mechanical movement to drive the clock hands. Additionally, some electric clocks may also use a small amount of energy for digital displays or other features.
The 7 day alarm clock from American Innovative allows you to set a different alarm every single day of the week. It has many other customizable features and is much more flexible than most alarm clocks on the market.
Sony offers a great clock radio, and it usually priced within reason.
The world's oldest clock tower is believed to be the Tower of the Winds in Athens, Greece. It was built in the 1st century BC and features a water clock to tell time.
Bus Clock is based on the System Clock. In other terms Bus Clock is derived from system Clock. Bus Clock is usually half System Clock. (Busy Clock = System Clock / 2)