i already have a few of the previous model (planet waves mini) living on the various headstocks of my ukes, and now I gave the new model by d’addario a try:

it is an excellent example of how even good things can be improved.

• slightly smaller than the previous model
• 3-color display (red=off, yellow=almost, green=in tune)
  the newest models use a different color scheme with white text, see picture below
• reworked clip, now fits thinner headstocks and is easier to handle
• “flip screen” display, can be turned 180° depending on mounting location
• bigger buttons on the micro tuner
• tuning range 410-480 Hz (mini: 410-450 Hz)
• optical metronome 20-270 bpm
  (haven’t used that one yet, but can imagine some use for it)
• battery now accessible without any kind of tools
  (you still needed a coin or similar to twist the battery compartment of the mini)
• standard CR2032 battery
• lightweight and almost invisible when mounted behind (or should I say “under”?) the headstock
• 360° swivel base
• piezo system for precise tuning even in noisy environments

bottom line: definitely one of my “must have” ukulele accessories.

cheap enough (available on amazon) to have one for every uke – and on the other hand so small you should never take it off because it will get lost 😉

some pictures below; on the left is the old model (pw mini), measures in cm

left: old model, right: new model

front view

side profile

mounting clip fully closed

mounting clip fully open

new display colors