Draw bar box (megaphone) PA-8020 frequency range /frequency range:210-270MHz, VHF output power / power capacity:80W frequency response characteristics of /Frequency Response:40Hz-KHz: features: Built in battery, rechargeable, batteries rechargeable, Built-in, portable, suitable for field use, and suitable for field use portable, two wireless microphones can be used at the same time, and do not interfere with the DVD. Wireless microphones can Two be used at the same time and non-interfering with the DVD. Compatible with DVD, tape deck, recording, compatible with DVD, with card connector, recordable, audio output, audio output can connect other speakers, amplifier, can be used alone, then the other speakers, amplifier, can also be used alone,