RMSR818U, No substitute available, R880VBK, RV880VBK, RV880VVK
Originally supplied with models: R880VBK, RV880VBK, RV880VVK, RX717VTN, RX818V, RX880BK, RX880U, RX880V, RX88OVBK, RX88VBK, RX8V, RXC880VBK
Battery Required : AA Battery 2 pack
Dimensions: 2.00 x 6.00 x 1.00 (W x L x D, inches)
