Remote Control for 7656V 7856V Viper Thank you for viewing. 7656V x 1 7856V x 1 Total of 2 items for sale. Used with Viper 5806V. These were stored after working properly, but I cannot re-confirm their operation now, so I cannot guarantee their functionality. The batteries are likely depleted, but you can buy them cheaply at Yodobashi. CR2032 is sold in a 2-pack for 80 yen, and CR2016 is sold in a 2-pack for 120 yen. The compatibility chart is based on the manufacturer's published materials, so I haven't verified everything myself. Some images have their brightness adjusted to make the condition easier to see.