HQRP Transmitter and Two Batteries for Nissan Sentra 2005 2006 2007 05 06 07 Key-Fob Remote Shell Case Cover Smart Key Keyless FOB + Coaster HQRP&reg; Replacement Transmitter and Two Lithium Batteries plus HQRP&reg; Coaster; 4 Buttons; Easy to install; This is just a Transmitter shell, there is NO interior (remote/electronics/transponder chips) inside! Battery Voltage: 3V; 100 days warranty!