Operational hours: 10:00 - 23:45 WIB Please understand, because human admins are not robots. If you are served outside these hours it means the admin is ON. Hard Disk Sentinel is software that can monitor and check the condition of your hard disk so that we can monitor whether its condition is still healthy or whether it is time to replace it. Hard Disk Sentinel is a perfect data protection solution. Products you can get: 1 Original License File for 1 Lifetime PC (Sentinel Hard Disk key is in the form of a file and also a serial number but we sell the original license file version so don't get me wrong) Ways of working: Enter your email and pay -> the product is sent via email (when we are online) and there is no physical delivery -> the installer can download it directly on the official website, after that install the application and enter the key according to the tutorial provided -> finished -> after successful activation, please give a 5 rating and review because it will really help us Thank You