This Earphone

OverStock.com has the Set Of 2 PLANTRONICS Explorer 330 Bluetooth Headset for $44.99 + $2.95 shipping = $47.94 Shipped.

Product description from OverStock.com:

• Plantronics Explorer 330 Bluetooth headset gives you hands-free listening
• Smart accessory for cell phone users on the go
• Sold in a case of two
• Headset features lightweight, ergonomic design for sleek and comfortable fit on either ear
• Fuses Bluetooth !
  wireless technology with effortless call control
• Up to eight hours of continuous talk time
• Up to 240 hours standby time
• Access all controls with a single button
• Convenient, one-touch controls
• 18 grams total weight
• 33-foot standard Bluetooth range

Product link.