Specifications: Input voltage: power socket 100-220V # Working voltage: CC 12 V Applicable ceramic tile: 30-100cm Adsorption capacity: ≤ 100kg/220lb Sucker material: plastic Vibration frequency: 12000 r/min Plastic box size: 40x20x15cm/16 * 8 * 6in Product net weight: 1.2 kg/2.6 lb Number of batteries: 1/2 include: 1 x Rechargeable tiles 1 charger 1 plastic box Rechargeable batteries (quantity optional)