Good cleaning, poor technique in all respects

Review after 1 year in use:
- Cleaning very good, since there is nothing to complain about
- Cumbersome switching between the individual modes of operation only the current state> This is not necessarily without taking the toothbrush out of your mouth. It injects the "content" of the brush from toothpaste and saliva through the bathroom
- Changing the tooth to be cleaned area is indicated by sputtering engine. That is antiquated and feel better with a discreet beep.
- It is a cheaper, used obsolete NiMH battery that takes about 12 hours to recharge> Other products use high-quality lithium-ion batteries, which are recharged in about 1 hour.
Not specified range of batteries such as the technical description, and this is a result of outdated technology -
- Very bad: The rated power (speed, heart rate) can only be achieved on a single charge. There is no automatic speed control A fading battery. This in turn means that you can not use a full battery cycle the device, if you want to achieve reasonable cleaning. The brush would have to permanently depend on the charger. The charger does not turn shutdown, but is consistently hot, so consumed continuously current.
- And another evil: The device is no longer running with the known humming, but loud growling like an old, rickety sewing machine for some time. In addition, a howling, screeching noise. If you set the toothbrush on the teeth, the resonance in the head to a jackhammer with simultaneous circular saw. So: Defective mechanical quality, a warranty claim.

"Premium" is for me something else!

- According to technical standards and to protect the environment, this device would be for me only mature and high quality, if the following conditions have been met:
1. The use of a lithium-ion battery
2. speed control, the speed and pulse rate over the range of the batteries is kept constant
3. charger with automatic switch-off when fully charged
4. Longer battery capacity than before
5. Pre-selection of the operating mode before the brush is turned on
6. mechanics, which holds as its predecessors by Oral-B at least 10 years