Robot 2 in 1 Sweeping and Wet Mopping Robot Vacuum Cleaner Specifications: Material: ABS Color: Black/White Size: 21.00 x21.00 x 5.00 cm / 8.27 x 8.27 x 1.96 inches Charging method: USB charging Power: 3W Voltage: 3.7V Main Machine Battery : 1200mAh Li-ion battery ( included ) Initial Charging Time: about 8H Normal Charging Time: 3H Working Time: 90 minutes Noise: less than 55db Package weight: 0.65 kg Package Content: 1 x Cleaner Robot 1 x USB Charging Cable 1 x User Manual 1 x Mop 2 x Machine brushes Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.1cm=0.3937inch