If you want to set up recording and playback video, an internal hard drive is necessary. The system can not record via external USB hard drive.
Usually, a hard drive is very expensive. A 1TB hard drive is 70 dollars. Therefore, the same system with a hard drive and without hard drive has a big difference in price. We sell the system with hard drive and system without the hard drive.
As a hard drive is necessary for recording and playback, why do we sell a system without a hard drive?
The reasons are as below.
1. Some customers have their own hard drive and don't need an extra hard drive. They can save a lot of money if buy a system without a hard drive.
2. A few customers don't need recording or playback. He only needs to see the live view. He can save a lot of money if he buys a system without a hard drive.
Applies to: ALL
We need to meet different customers' demand.
A digital camera can not take pictures without an SD card. But when you buy a brand new camera, there is no SD card inside and you need to get an SD card by yourself.
A cellphone cannot make a call without a SIM card. But when you buy a brand new cellphone, there is no SIM card inside and you need to get a SIM card by yourself.
Hope you can understand.
We have marked if the system has a hard drive in the product link.
If you find your system doesn't include a hard drive but you need to record, you can contact the seller to buy a hard drive or you can buy a hard drive by yourself. Here are the brand and models we recommend. https://sannce.zendesk.com/hc/en-us/articles/360029066391
If you can not accept either of the above 2 solutions, please contact the seller to inform them you are not satisfied there is no hard drive included and ask for a refund. But please don't leave negative feedback or review on the listing.