Product Parameters: Battery Type: Lithium Battery Bristles Material: Nylon Input Voltage: DC3.7V Input Power: 1W Certification: In compliance with CE, ROHS standards Model: 508 Product Features: High-performance Sonic Motor 5 Smart Brushing Modes Smart Timer Overcharge Protection One Charge for 30 Days "W" Shape Bristle for Deep Cleaning Sonic Technology 40000 high-speed vibrations per minute to clean effectively. Smart Timer 2 minutes tooth brushing recommended by dentists. Smart Timer: Built-in smart timer shuts off the unit automatically after two minutes and pauses every 30 seconds to remind users to change the area they are brushing. Clean properly with soft DuPont bristles The soft DuPont bristle provides better protection for your gums while deeply cleaning. 5 Smart Brushing Modes White/Clean/Sensitive/Polish/Massage One charge for 30 days Package Contents: Toothbrush Handle x 1 Replacement Heads x 3 Brush Holder x 1 USB to DC Cable x 1 User Guide x 1