Klein Tools Cat. No. AEPJS3 is a mid-sized powered speaker designed to provide high-quality sound for smart phones, tablets, computers, or other audio devices. The AEPJS3 will also charge common mobile devices like cell phones, tablets, headphones, and other smaller USB devices. Featuring a strong magnet for mounting, a hook attached for hanging on a nail or screw, and the AEPJS3 speaker can be daisy-chained to another AEPJS3 to replicate the same sound on both speakers.