Approximately 6000 plastic backs for most models of phones.

Description

This is a Rampage by Audiovox portable VHS player. It's an all-in-one unit with a screen for viewing VHS tapes on the go. 
It is a portable VCR NTSC [Not PAL] This is only for playing American Video tapes NTSC and not PAL that is used in the UK.
The model is the Audiovox Rampage VBP1000. 
It features a small, built-in LCD screen. 
It plays VHS tapes, a standard for analog video recording on cassettes. 
It was popular in the 1980s and 1990s before DVDs and other digital formats became common. 
It comes with accessories, a carry bag, 12V car output and a power lead.