The Chord Additional Wireless Transmitter is designed to be paired with the LM58 wireless clip microphone set, allowing for two-person presentations with one microphone on the left channel and the other on the right. It operates on the license-free frequency 5.8GHz and can be used with a built-in microphone or connected to a neckband or lavalier mic. The transmitter has a range of up to 60m, a battery life of up to 5 hours, and features a compact and lightweight design. It is important to note that this item is an additional transmitter only and should not be purchased without first owning the LM58 set. Made in China, the product dimensions are 18.7 x 13.2 x 3.7 cm and it weighs 80 g.