The NutriCrystal Smart Food Scale comes with both Bluetooth 2.1 EDR and Bluetooth 4.0 (Low Energy) connectivities.
You can connect the scale to iPhone 4S, iPhone 5, iPod Touch 5, iPad Mini and iPad 3.
And if you have an Android device, you will be able to connect to the NutriCrystal via the Bluetooth 2.1 EDR.
There are no settings to switch from the two Bluetooth version. The brain of the scale will make appropriate choice for you during connection.
Part of the ReFleX Wireless Product Family