AmerTac - Zenith ZC600 6-Device Universal Learning Remote 6 Device Universal: TV, DVD/VCR, SAT, HD, DVR, CBL Learning key allows programming of additional functions from your original equipment remote 128K micro, over 3700 codes Advanced function: SAT, CBL,HD, DVR Advanced DVD functionality, Blue Highlighted keys Advanced keys for DVD and SAT functions, HD keys for aspect ratio, MTS and replay Easy to program with over 3700 codes Operates most digital TV set-top boxes, TV, HDTV, DVD, VCR, cable/satellite and AUX 1-Learning key Requires 2 AAA batteries (not included)