1) It is recommended that you charge it at home before using it for the first time. And, the phone. 2) If you want to be prepared for any eventuality, invest in a carrying case that is watertight in advance. Naturally, the activity is going to be more enjoyable when using such a device. The day that we arrived at the river, we cast our fishing poles, but there was no action. After that, we proceeded through the echo sounder and pulled perches in the locations that he had shown us. -\sAddition. I started using the device in July 2022, and at the time of purchase there was a promotion in which I had to write a review, and then they would send a case for the phone. I started using the device in July 2022. I followed the directions to a T and was successful in obtaining a case. It is now the month of September, and they still have not responded to any of my requests. It's really too bad.
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