Features: 1) Innovative technology and craftwork make recorder lighter and compactor. 2) 128X64 LCD, Simple menu setting, Easy operation; real-time signal display makes placement of electrodes and other sensors much easier 3) Signal verification on demand 4) Removal CF card as storage medium 5) A built-in 50Hz notch filter 6) Electronic label to avoid mismatch between patient information and patient data when used for more patients 7) Low battery detection and buzzer alarm 8) Event button 9) Ag/Au disk electrode