This guitar tuner is very lightweight, weighing about 5.6 ounces. It is also small in size,measuring 93 x 53 x 45 mm so it is portable and easy to take with you and store as it does not take up much room. It is also very durable and well made. The outside of the tuner is made of aluminum. It does exactly what it is supposed to do and has helped out a lot. The display is large and easy to read. The dimensions of the screen are 2.8cm x 2.5cm. The display is well lit so even in lower lighting you are able to read it. The tuner is really easy to use. You just plug it in and tune either your guitar or bass. This is a must have for any guitarist.