The Laifen Wave SE offers a more gentle version of the oscillation and vibration dual-cleaning its predecesor delivers. Laifen Wave SE Toothbrush: One minute reviewThe Laifen Wave SE is the second electric toothbrush from the Chinese manufacturer. Laifen Wave SE review: Price and availability(Image credit: Future)Priced at $90 in the US£90 in the UKAU$200 in AustraliaThe Laifen Wave SE follows up the original, which arrived earlier in 2025, and is priced at $89.99 in the US, £89.99 in the UK and AU$199.99 in Australia. With the settings pumped up, I noticed the battery life did drop, and that noise jumped quite a bit louder. You don't want to think about charging The 50-day battery life combined with three-hour charge time make the thought of battery life one you needn't often concern yourself with.