This is a Fernandes guitar/bass tuner. It's an older model. It's almost unused. I put batteries in it. There were no problems with the red light or the LCD. It seems to work normally. The tuner's LCD is clearer when viewed from a slightly diagonal angle, rather than directly from above. Please be aware of this. The included batteries are expired. Please be aware of this. This item has been in personal long-term possession, so please understand this before purchasing. To avoid unnecessary trouble, please purchase this item only if you understand how to use it. Please refrain from purchasing if you are overly concerned about minor details. Dimensions: Approximately W23 x H30 x D50 mm Weight: Approximately 85g