Stylus

(L to R: HTC, Palm, Belkin, Staedtler)

Stylus is a pen-like tool for input on touchscreen devices such as Personal Digital Assistants (PDA), cellphones, and tablets.

Car Adapter (Car Powered Adapter)

A car adapter (or car powered adapter) is an adapter that slides into the car's power port to give a vehicle the ability to receive a type of plug that is not found already in the car or to add another port.  The most common is a USB car adapter to allow the charging of USB devices in the vehicle.

USB Cable

(From Left to Right: male MicroUSB and male MiniUSB Connector)

There are four types of Universal Serial Bus (USB) connectors.  The four types are USB, miniUSB, microUSB, and proprietary.  Proprietary connectors are used mostly on Apple products and tablets. Mobile devices uses miniUSB or microUSB.  Majority of the new devices use microUSB because of EU regulations.  The remainder use the standard USB connector.  The male connector is the side that goes into the receiving end or the female connector.

Portable USB Charger

A portable USB charger is a device with an embedded battery or a slot for AA or AAA battery that can charge portable devices on the go via a USB cable that is not necessarily supplied.  Pictured are common portable USB chargers by Duracell and Energizer.

(Yasuhito prefers Duracell chargers in that generally they can be used with the USB cable that was supplied with your mobile device or smartphone.  Energizers tend to be slimmer but wider.)

Bluetooth Headset

Before we discuss what a Bluetooth Headset is, we are going to define what exactly is Bluetooth.  Bluetooth is a wireless standard for exchanging data by use of radio transmissions.  Devices that carry the Bluetooth logo must be approved by the Bluetooth Special Interest Group or SIG for short.  A Bluetooth headset is essentially a wireless headset that has Bluetooth wireless data transfer technology approved by SIG.