There are nearly as many uses for Bluetooth as there are types of gadgets and electronic accessories: TV, printers, keyboards, stereos, car stereos, portable speakers, stereo headphones, and of course headsets. Unfortunately, iOS (on the iPhone, iPad and iPod touch) isn't compatible with all Bluetooth accessories. Only those that use an Apple chip or A2DP can communicate with an iOS device. In addition to Bluetooth headphones, iOS now supports Bluetooth keyboards and A2DP-compatible Bluetooth devices, including portable speakers and stereo headphones. Bluetooth speakers offer an extraordinary convenience. Simply get within 10 yards of them, use Setings/General/BlueTooth to "pair" your iOS device with the speakers, and you're good to go.
Motorola MOTOROKR S305 ($49.95, motorola.com) has a lightweight design but a comfortable, snug fit for a very reasonable price.
Sony Ericsson HBH-IS800 ($119.95, sonyericsson.com) Though tiny in size, there is little compromise in its outstanding sound quality.
Jabra HALO wireless headset ($99.99, jabra.com) connects easily to your mobile phone through stereo Bluetooth and enables you to stream music wirelessly. You can even make and take calls wirelessly.
Creative Labs ZiiSound D5 ($299, creative.com) is an impressive speaker that gives you a full sound. While wired speakers generally give better sound for the same amount of money, the D5 is nearly the equal of the best similarly priced wired speakers. It measures 3.5 inches high, 16.7 inches wide, and 4.3 inches deep.
FoxL ($199, soundmatters.com) Good things come in small packages. This speaker gets top reviews for quality, yet is tiny, measuring 2 inches high, 5.5 inches wide, and just over 1 inch deep. The built-in rechargeable battery will stream music for up to 5 hours.
Motorola MOTOROKR EQ5 ($34.99, motorola.com) At 6 inches high, 10 inches wide, and 2 inches deep, the MOTOROKR EQ5 is a low-cost speaker with good sound and a rechargeable battery.
Freedom i-Connex Keyboard ($95.95, freedominput.com) is a great portable Bluetooth keyboard and stand.
Macally BTKeyMini iPad/iPhone Bluetooth keyboard ($89.99, macally.com) is an excellent Bluetooth keyboard, designed to fold up and carry in your bag.
Apple Wireless Keyboard ($69, apple.com) has a 30-foot range and an intelligent power management system for good battery life.
Jawbone Icon ($99.95, jawbone.com) features a military grade "noise assassin." According to Jawbone, four out of five people prefer using the ICON rather than their mobile phone alone.
Motorola H17 Bluetooth Headset ($99 motorola.com) is a sleek, lightweight headset with excellent audio. It flips open to turn on calls, and flips closed to turn off and save power.
Plantronics Discovery 975 Bluetooth headset ($99.95, plantronics.com) Ingeniously simple in its technology and design, it delivers clear conversations even in harsh conditions thanks to three layers of wind noise protection.
Jabra BT2080 ($29.95, jabra.com) has all the basic functions you need with the ease of use you want at the right price.