The Dhruva Nano Dx 4-in-1 is a TUNER /SRUTI BOX / METRONOME / GAME. It is tiny - palm-sized: 115 x 130 x 80 mm. Weight approximately 0.5kg. It has a Tuner / Pitch-pipe with Digital Display, Dual scale system: Chromatic / Diatonic It has Auto-tuning of SA-PA-SA / SA-MA-SA with LED indication Pitch adjustable over 1 octave and Fine tuning of pitch is available The Dhruva Nan Dx has an optional Metronome. A new feature in the Dhruva Nano Dx is the tuning game to help improve your tuning skill.
The Dhruva Nano Dx also has the standard Radel features:

• SMPS (Universal voltage facility) for use at any voltage from 90 - 260V AC
• Automatic switchover to batteries on power failure
• Automatic saving of selected pitch into memory; option of saving one more selection into memory
• 3 year warranty, plus the world-renowned Radel after-sales service .