WVP 10 Adv: Lightweight, ergonomic and universal Lightweight, ergonomic and universal Suitable for all types of smooth surfaces ? horizontal, vertical or even overhead. Comfortable handling and easy to operate. Safe, pleasant handling thanks to rubber handle. WVP 10 Adv: Removable, replaceable battery Removable, replaceable battery Allows external battery charging and, in conjunction with a spare battery, uninterrupted working. Charging state is displayed by 3 LEDs above the ON/OFF switch. WVP 10 Adv: Convenient cleaning of edges Convenient cleaning of edges Streak-free cleaning results