Summary for Models:
SN-1: Blue color, only good for electric guitar and bass guitar. no microphone, sensitivity 5 stars. Strongly recommended.
SN-2: Red color, 1 tuner fits all model, not only very sensitive, also include built-in microphone. Any musical instrument you can clip-on, it will work. Display roates 360 degrees. Pitch calibration (415-466Hz)
SN-5: Shiny Black color, similar to SN-1 with extra compatibility for violin
SN-8: Polish Black color, fit most instruments, guitar, bass, ukulele, violin. Bigger display than SN-1/2/5. no microphone
SN-1X – Replacement from SN-1, faster chip and Better LCD screen
SN-5X – Replacement for SN-5, faster chip and Better LCD screen
SN-6X – A Tuner made exclusively for Ukulele, full-color display, rotates 360 degrees and tap tempo metronome
ST-2 – Upgrade from SN-2, ST stands for Super Tight, super bright and clear display and faster processing and tracking speek. Built-in microphone works on all musical instruments
ST-8 – New and improved version of the SN-8, faster chip and Better LCD screen
ST-8hz – New and improved version of ST-8 with added ability to tune to specific hertz (with accuracy of +/- 1/10th of 1hz) frequencies for astonishing accuracy.
Snark HZ-1 – unbreakable clamp clip, hertz tuning