Headphones (or head-phones in the early days of telephony and radio) are a pair of small listening devices that are designed to be worn on or around the head over a user's ears.

They are electroacoustic transducers, which convert an electrical signal to a corresponding sound in the user's ear.

Headphones are designed to allow a single user to listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air, for anyone nearby to hear.

Headphones are also known as earspeakers, earphones or, colloquially, cans.

Circumaural and supra-aural headphones use a band over the top of the head to hold the speakers in place.

The other type, known as earbuds or earphones consist of individual units that plug into the user's ear canal.

In the context of telecommunication, a headset is a combination of headphone and microphone.

Headphones connect to a signal source such as an audio amplifier, radio, CD player, portable media player, mobile phone, video game console, or electronic musical instrument, either directly using a cord, or using wireless technology such as bluetooth or FM radio.

The first headphones were developed in the late 1800s from telephone receivers for use by telephone operators, to keep their hands free.

Initially the audio quality was mediocre and a step forward was the invention of high fidelity headphones.

Lingerie are women's undergarments, and may imply their being fashionable and alluring.

Lingerie undergarments use flexible, stretchy, sheer, or decorative materials like Lycra, nylon (nylon tricot), polyester, satin, lace, silk and sheer fabric.

Certain cotton or synthetic undergarments are also lingerie.

A fashion accessory is an item used to contribute, in a secondary manner, to the wearer's outfit, often used to complete an outfit and chosen to specifically complement the wearer's look.

The term came into use in the 19th century.

A sex toy is an object or device that is primarily used to facilitate human sexual pleasure, such as a dildo or vibrator.

Many popular sex toys are designed to resemble human genitals and may be vibrating or non-vibrating.

The term sex toy can also include BDSM apparatus and sex furniture such as slings; however, it is not applied to items such as birth control, pornography, or condoms.

Alternative expressions include adult toy and the dated euphemism marital aid, although "marital aid" has a broader sense and is applied to drugs and herbs marketed to supposedly enhance or prolong sex.

Sex toys are most commonly sold at a sex shop, but they may also be sold in a pornographic DVD store or head shop.

Today's sex toys are available in almost all countries for male and females.

Clothing (also called clothes and attire) is fiber and textile material worn on the body.

The wearing of clothing is mostly restricted to human beings and is a feature of nearly all human societies.

The amount and type of clothing worn depends on body type, social, and geographic considerations.

Some clothing types can be gender-specific.