Sony Bows Four Bluetooth Headphones for March Shipping

Sony bowed four Bluetooth headphones Monday for on-the-go listening. The MDR-ZX770BN active noise-canceling headphones ($229), with 40mm drivers, pack aptX Bluetooth and near field communications (NFC) technology. With NFC, users can connect their headphones to another device by tapping them together, said the company. The $149 MDR-ZX770BT headphones, also with 40mm drivers, have a built-in microphone for hands-free calling. The rechargeable battery delivers 17 hours of battery life, Sony said, and the earcups fold flat for easy storage in a gym bag. The MDR-ZX330BT Bluetooth headphones ($99), with 30mm drivers and NFC, claim 30-hour battery life, said the company. The $99 MDR-AS600BT sports headphones include Bluetooth and NFC and are said to be water-resistant. Battery life is given as 8.5 hours, and the headphones come in black and orange. All four models, with hands-free calling, are due in stores this month, the company said.