I received these as gifts, but I'm already using a different electric toothbrush, so I'm selling them. Both are new and unopened. For reference, the lowest prices on Kakaku.com are 4590 yen for the B304 and 3800 yen for the B303. Sonic Electric Toothbrush Rechargeable HT-B304-W White Sonic Electric Toothbrush Rechargeable HT-B303-PK Pink Product Features: Removes plaque approximately 5 times better than manual brushing with the unique 3D micro-vibration "Multi-Action". Omron's unique 3D micro-vibration "Multi-Action," which combines vertical and horizontal vibrations, effectively removes plaque. The "Clean Mode" with approximately 25,500 high-speed vibrations per minute quickly removes plaque. The plaque removal power when brushing with the plaque removal brush in Clean Mode is about 5 times that of manual brushing.