At only 10-1/2" and 3.5 lb., the new M12 radio is up to 10 times smaller than existing job site radios. With the introduction of the 1st digital processor in the category, it also delivers the highest reception and signal clarity in the industry. In addition, the M12 radio features premium weatherproof aluminum speakers that produce a rich, full sound, and a built-in weather sealed MP3 compartment to protect MP3 players and other audio devices connected to the docking portal. Backed by legendary Milwaukee durability, a shock absorbing polymer and steel construction protects internal components from weather and abusive job site conditions. Includes (2) AAA batteries, (1) AC adapter.