Precautions for purchase
1. Electronic products do not become AS. Please purchase with this in mind.
2. Exchanges or refunds are possible if a problem occurs within 7 days of purchase.
3. When charging, use a computer, laptop, or power bank, and use low-speed charging, not high-speed charging.
4. When storing, it must be fully charged and stored with the switch turned off.
5. If you do not use it for more than 3 months, you need to charge it once every 3 months.