Standard features are as below:

CE,Rohs, Reach,WEEE certified

Erp Class A/B
Smart Control
Universal Installation
Super Slim body, hidden installation into the cabinet.
Dry heating element optional
Capillary Thermostat
Enamel Tank
Digital Touch Control
Power Indicator
Enamel Heating Element
Earth Protection
Dry heating Protection
Over Temperature Protection
Anti Freeze protection
long life magnesium optional
electronic anode optional
Wifi Optional 
High Temp. anti-bacterial function standard