Artist TN50 Chromatic Clip on Guitar Digital Tuner
This is a great little tuner for the price. Some of the factors that make this tuner exceptional are the large solid readout, stable precise tuning, and the ability to track really well on low notes (tunes bass guitars really well).
Will tune any guitar or bass and just about any instrument (It just needs somewhere it can clip on). It includes chromatic mode so you can tune to any note you like (including open tunings and de-tuning).
The Tech Features
Style: Clip on Chromatic Tuner
Battery: CR2032 (included)