Oclean F1 Sonic Electric Toothbrush US$29.99 (~NZ$47.96) Delivered @ Oclean

Rated 4.2 out of 5 on Amazon US where it has quite some sales. Originally at 34.99USD, now dropped to 29.99USD with code CAREF1

Hightlight

Thorough Cleaning Experience
3D Designed Bristles
Blind Zone Detection
IPX7 Waterproof
Easy to Use