1. Waterproof, solid adsorption, not easy to fall off
2. Inner brush seal hollow design, can be suspended without sinking
3. Frosted grip texture, comfortable and non-slip
4. Inner brush hard bristles, durable and unchanging shape, easy to remove algae, outer brush soft bristles, do not hurt the tank wall
5. Algae scraper can be replaced and disassembled
6. Size: small: about 10.6 x 3.8 x 6.8cm, medium: about 13.5 x 5 x 7.5cm, large: about 15 x 6.2 x 8cm
7. Weight: small: about 105g, medium: about 190g, large: about 265g, large enhanced version of about 290g
8. Use of open notes: due to the suction force, open the two brush surface rotate to 90 degrees and then force to break apart, do not lean too close after separation, to avoid pinching fingers

Caution:
1. Do not wear a pacemaker near
2. Place out of reach of children