Why is my smart toothbrush blinking blue sometimes?

If you're seeing your smart toothbrush blink blue every now and then, don't worry - it's totally normal. It just means that your toothbrush is trying to connect with your smartphone. It'll blink blue when it's first pairing up with your phone, and also when your phone is just out of range and trying to reconnect. So, no need to stress - your toothbrush is just doing its job!