Sonic Technology Speed Up to 31,000 Brushing Movements / minute Operating Time Up to 14 days on Basic Operation Battery Rechargeable Battery type Lithium ion

Size 28cm Material Aluminum Coating Non-stick

Size 20cm Material Aluminum Coating Non-stick

Zones: 4 Speaker Outputs: 8 Amplifier Inputs: 1 Max Input (per channel): 140W Protection: Yes

Power 450 W 5 Speeds