With 　 simple as for the operation to apply the steps distance record elderly person whom there is no smart 　 　-free application-free GRV 　 　 Bluetooth in

　 Bluetoothless application-free 　 　 S1 does not have Bluetooth, and the installation of the application is unnecessary, too. The 　 is not equipped with Bluetooth, and it is not necessary to install application, and the connection with the smartphone is not necessary, too. It is designed for the elderly and 　, and the operation is easy, too. 　 function introduction 　 I record steps, distance, time. It is simple, and it is practical. [I can use it for a long term 　 With battery of 90mAh, I can wait in normally using it for 3-5 days, 30 days. It is not necessary to charge it frequently. 　 　, bold-faced font 　 I adopt a bold-faced font in 　 of 0.96 inches and am designed for an elderly person and am very convenient for data and confirmation of the time. 　 IP67 waterproofing, dust proofing 　 It is not necessary to take it off by IP67 high level waterproofing, dust proofing in face-wash and the rainy day. You can use it for swimming, but please avoid the use in a bath and the sea.