The Bluetooth Special Interest Group (SIG) has announced the adoption of Bluetooth low energy wireless technology, which is the hallmark feature of the Bluetooth Core Specification Version 4.0.
The technology is designed to let devices consume as little power as possible by using very short bursts of data and, when in the mode, running at a peak 1Mbps. While slow, the standard is efficient enough that a device with watch batteries could run its wireless signal for “years” before it needs a replacement.
The new Bluetooth implementation also has roughly as good or better performance than the current full-power technique. It still has low latency and can extend its range to as far as about 328 feet, or ten times what Bluetooth normally uses.