D'Addario Humidipak Restore Kit PW-HPK-03 NOSBSDISCOUNT Bright display in both of

Bright display in both of sunlight and darkness

transparent sound Fine-tuning feature lets you quickly choose between an open

excellent tuning stability

Banjo/Mandolin (fits to the 4th fret on a 5-String) Smokey Black

D'Addario Humidipak Restore Kit PW-HPK-03 NOSBSDISCOUNT Bright display in both ofThis unit is for conditioning (or re humidifying) a dried out instrument. D'Addario Humidipak is the only maintenance free, two way humidity control system for guitar. It automatically maintains the optimal 45% 50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier. No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors.