iPhone News Updated

iPhone 4S first phone for low-power Bluetooth

The iPhone 4S has a little-heralded feature that makes it unique among phones, at least for a while: It can talk to a new class of wireless devices, such as watches and heart-rate monitors.

The phone, which went on sale Oct. 14, is the first to have a new type of Bluetooth chip that can connect using very little power. The chip uses so little power that it can go into devices that are powered only by a standard “button cell” battery common in watches. The battery can last for years.

Bluetooth Special Interest Group, the industry group behind Bluetooth, on Monday said these small devices will be labeled “Bluetooth Smart.” More fully featured devices such as the iPhone that can communicate with them and with other, standard Bluetooth devices will be labeled “Bluetooth Smart Ready.”

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