Question about Bluetooth 4.0 (l.e)

[Z8beema]

So when they come out (eventually) I plan on purchasing the iwatch and razer nabu. My question is how much would a Bluetooth 4.0 accessory drain the battery? Is there a Bluetooth 4.0 accessory out to get an idea?

 

[The Doctor11]

I'm not sure but blue tooth 4.0 is suppose to be really good on battery life.

 

[aziatiklover]

I use my pebble daily and without having any notification on my iphone but instead on my pebble. I get about 6-7 hours of battery on my iphone and before without the pebble I get 5 hours max. that's heavy use as well.

 

[cynics]

My iPhone is connected to a Bluetooth v 3.0 headset all day long with no noticeable battery drain on either device vs not being pair.

When tethering via Bluetooth 4.0 I don't notice any drain either.