Apple working to slim its iWatch via intermittent Bluetooth LE connection?

iWatch concept by Stephen Olmstead

iWatch concept by Stephen Olmstead

An Apple patent filing filed today suggests that Apple may be working on a way to make its long-rumored iWatch slimmer than existing offerings by reducing the size of the battery required.

One of the barriers to widespread adoption of smartwatches is that existing models are not exactly sleek. Technology lovers might be willing to put function ahead of form and put up with chunky devices, but the wider market buys on style first, technology second.

While the Bluetooth LE protocol used by existing smartwatches uses around half the power of classic Bluetooth (peaking at 15mA instead of 30mA), a constant connection in a device you won’t want to charge daily still requires a reasonably chunky battery. What Apple’s patent proposes is for an on-demand creation of a Bluetooth connection between two devices, one with radio capabilities (aka an iPhone), one without … 

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The proximity profile defines a proximity notification alert that the supporting device sends to the device to advertise its shared access service to the network for devices within range. In one embodiment, upon receiving the proximity notification alert the device joins the supporting device’s shared access service and briefly connects to the network to receive push notifications or other messages, before disconnecting.


Apple’s offering is expected to major on fitness and sensor features. We provided a roundup of some of the more interesting iWatch concepts in August, and a Nike Fuel Band-style one last month. Google is also believed to be working on  a Nexus-branded smartwatch, likely to be released ahead of Apple’s iWatch.

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  1. I always wondered why they kept using circular-shaped images for the contacts instead of rounded squares like they do for app icons (and really went forward with it in iOS 7), but I guess keeping conformity with the login screen for OS X, these circular images fit well within the face of an upcoming smartwatch.

  2. 311sie - 9 years ago

    They are already modifying the design of the iWatch? You know, the unconfirmed product that no one has ever seen or proved it exists? That iWatch?

  3. Stephen Hagans - 9 years ago

    In the case of a watch, I think bulky is better. And especially if I get extra battery life out of it. …..just my opinion but I hope it looks nothing like the mock up above.

  4. Chris Denny (@dennyc69) - 9 years ago

    I’m just wondering when in 2014 when we will see it, or if we see it.


Avatar for Ben Lovejoy Ben Lovejoy

Ben Lovejoy is a British technology writer and EU Editor for 9to5Mac. He’s known for his op-eds and diary pieces, exploring his experience of Apple products over time, for a more rounded review. He also writes fiction, with two technothriller novels, a couple of SF shorts and a rom-com!

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