Based on 8 r/BuyItForLife mentions

Wave

$105.98

Laifen

Reddit mentions

  • “We recently got a Laifen Wave. My son really wanted it and it was a bit cheaper than the OralB iO 7 I would’ve otherwise gotten. I have to say that after the initial shock how hard…”
  • “I am very satisfied with Laifen Wave”
  • “Thanks so much to everyone for some interesting and affordable recommendations!  There were few brands mentioned that were more affordable price points:  - Suri - Laifen…”
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Product details
Length
31.6mm
Handle Weight
135g -163g (±4 g)
Noise Level
As low as 55dB
Waterproof Rating
IPX7