1. Please check if the strap is installed upside down and the speaker hole is covered. If so, disassemble and reinstall, then try again.
2. Check whether the speaker hole is blocked by foreign matter. Try again after cleaning.
3. The speaker may be waterlogged. Try again after letting it dry.
2. Check whether the speaker hole is blocked by foreign matter. Try again after cleaning.
3. The speaker may be waterlogged. Try again after letting it dry.
