7MAGIC Sonic Electric Toothbrush with 8 Brush Heads

• Amazon now offers the 7MAGIC Sonic Electric Toothbrush with 8 brush heads, now $9.99 (list price $23.99). Use promo code 4PY9FSE9.
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: The sonic vibration reaches up to 42,000 times per minute, cleaning hard-to-reach areas between teeth thoroughly. It has five modes with three intensity levels, so new users can start with the gentle setting to get used to it. One full charge lasts about six months, making it hassle-free for business trips or travel. It's IPX7 waterproof, so you can even brush while showering. The included brush heads will last you a good while.