Holter Recorder MGY-H3 Lead: 3 Storage: 256M Non-volatile flash memory Flash Card Model: ScanDisk-128 Time: 168 Hour Sample Rate: 512Hz, Write Rate 128Hz. Size: 74mm×55mm×19mm Weight: 52g with battery Power Source: 1 AAA Data Output: 3-channel digital, for real-time ECG data acquisition, or for hookup check. ECG Cable Model: SC-15F/7N |