This Earphone

RadioShack.com has the Parrot Bluetooth Headset on sale for $40 + shipping, with free shipping to your local store. It comes with an in-car charger that doubles as a cradle for your on-the-go lifestyle.

Product description from RadioShack.com:

The originality of the Parrot headset lies in the cradle that plugs into the 12V vehicle power adapter. The cradle is used to both recharge the headset and hold it when not in use. T!
he long-life battery is therefore always charged. Cradle rings when a call comes in. Call is established when you unhook headset from cradle.

• In-car cradle doubles as headset carrier and charger when not in use
• Cradle keeps headset constantly charged
• Full charge offers 5 hours of talk time
• Built-in Bluecore 3 processor offers complete compatibility with all Bluetooth® phones
• Automatic pick up/hang up
• One button call management