Logitech today introduced its FreePulse wireless headphones for iPods and other MP3 players. The cordless headphones feature a behind-the-head design with spring-steel headband, integrated volume controls, bass boost, and Bluetooth 2.0 Enhanced Data Rate (EDR) wireless technology. The FreePulse headphones ($100) come with an adapter that plugs into any player with a 3.5 mm headphone jack. Both the headphones and adapter are rechargeable and have a range of up to 33 feet. The Logitech FreePulse headphones will be available next month.