RYOBI 40V Brushless 125 MPH 550 CFM Cordless Battery Whisper Series Jet Fan Blower with 4.0 Ah Battery and Charger

0 (zero) is a number representing an empty quantity. Adding (or subtracting) 0 to any number leaves that number unchanged; in mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures. Multiplying any number by 0 results in 0, and consequently division by zero has no meaning in arithmetic.

As a numerical digit, 0 plays a crucial role in decimal notation: it indicates that the power of ten corresponding to the place containing a 0 does not contribute to the total. For example, "205" in decimal means two hundreds, no tens, and five ones. The same principle applies in place-value notations that uses a base other than ten, such as binary and hexadecimal. The modern use of 0 in this manner derives from Indian mathematics that was transmitted to Europe via medieval Islamic mathematicians and popularized by Fibonacci. It was independently used by the Maya.

Common names for the number 0 in English include zero, nought, naught (), and nil. In contexts where at least one adjacent digit distinguishes it from the letter O, the number is sometimes pronounced as oh or o (). Informal or slang terms for 0 include zilch and zip. Historically, ought, aught (), and cipher have also been used.

125 may refer to:

• 125 (number), a natural number
• AD 125, a year in the 2nd century AD
• 125 BC, a year in the 2nd century BC
• 125 (dinghy), a two person intermediate sailing dinghy
• 125 (New Jersey bus), a New Jersey Transit bus route
• 125 Liberatrix, a main-belt asteroid
• Fiat 125, a large family car
• Škoda 125, a compact sedan

4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5.

4 is the smallest square number > 1, the smallest semiprime and composite number, and the 3rd highly composite number.

The number 4 is considered unlucky in many East Asian cultures.

Year 550 (DL) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 550 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Battery or batterie most often refers to:

• Electric battery, a device that provides electrical power
• Battery (crime), a crime involving unlawful physical contact

Battery may also refer to:

Charger or Chargers may refer to:

• Charger (table setting), decorative plates used to fancify a place setting
• Battery charger, a device used to put energy into a cell or battery
• Capacitor charger, typically a high voltage DC power supply designed to rapidly charge a bank of capacitors in pulsed power applications
• Whipped-cream charger, a cartridge designed to deliver nitrous oxide in a whipped cream dispenser
• Charger (firearm), a common and chiefly British term for a stripper clip, used in the reloading of firearms
• A war horse
• A type of special infected in Left 4 Dead 2
• The squadron name for US Navy Strike Fighter Squadron VFA-161
• USS Charger
• HMS Charger

The term cordless is generally used to refer to electrical or electronic devices that are powered by a battery or battery pack and can operate without a power cord or cable attached to an electrical outlet to provide mains power, allowing greater mobility. The term "cordless" should not be confused with the term "wireless", although it often is in common usage, possibly because some cordless devices (e.g., cordless telephones) are also wireless. The term "wireless" generally refers to devices that use some form of energy (e.g., radio waves, infrared, ultrasonic, etc.) to transfer information or commands over a distance without the use of communication wires, regardless of whether the device gets its power from a power cord or a battery. The term "portable" is an even more general term and, when referring to electrical and electronic devices, usually means devices which are totally self-contained (e.g., have built-in power supplies, have no base unit, etc.) and which may also use wireless technology.

Fan commonly refers to:

• Fan (machine), a machine for producing airflow, often used for cooling
• Hand fan, an implement held and waved by hand to move air for cooling
• Fan (person), short for fanatic; an enthusiast or supporter, especially with regard to entertainment

Fan, FAN or fans may also refer to:

MPH or mph is a common abbreviation of miles per hour, a measurement of speed.

MPH may also refer to:

• MPH (comics), a 2014–2015 comic book series by Mark Millar and Duncan Fegredo
• Make Poverty History, campaign to end poverty in Africa
• Manlius Pebble Hill School, DeWitt, New York, US
• Martinair's airline code
• Master of Public Health, degree
• Mater Private Hospital, Dublin, Ireland
• Mobile Pedestrian Handheld, a mobile digital television transmission standard
• MPH Group, Malaysian bookstore chain
• MPH Entertainment, Inc., an American film and television production company
• Metroid Prime Hunters, a video game
• MPH, superspeed superhero character in the comic book series Astro City
• Godofredo P. Ramos Airport (IATA code), an airport in the Philippines
• MPH Games Co., a defunct board game publisher

With or WITH may refer to:

• With, a preposition in English
• Carl Johannes With (1877–1923), Danish doctor and arachnologist
• With (character), a character in D. N. Angel
• With (novel), a novel by Donald Harrington
• With (album), a 2014 album by TVXQ
• With (EP), a 2021 EP by Nam Woo-hyun