How to safely shut down or force shut down Highscreen devices

Highscreen Zera U Highscreen Zera U
Highscreen Hercules Highscreen Hercules
Highscreen Verge Highscreen Verge
Highscreen Pure F Highscreen Pure F
Highscreen Power Five Highscreen Power Five
Highscreen Pure J Highscreen Pure J
Highscreen Boost 3 Highscreen Boost 3
Highscreen Power Four Highscreen Power Four
Highscreen Spark 2 Highscreen Spark 2
Highscreen Power Five Pro Highscreen Power Five Pro
Highscreen Bay Highscreen Bay
Highscreen Boost 3 Pro Highscreen Boost 3 Pro
Highscreen Power Ice Highscreen Power Ice
Highscreen Power Rage Highscreen Power Rage
Highscreen Prime L Highscreen Prime L
Highscreen Tasty Highscreen Tasty
Highscreen Power Five Evo Highscreen Power Five Evo
Highscreen Easy F Highscreen Easy F
Highscreen Easy F Pro Highscreen Easy F Pro
Highscreen Pure Power Highscreen Pure Power