OverviewZ303 Multifunctional Zero Electronic Speaker Mini Portable Hands-free Key Switch Function / F-Card / USB Port Center: Distance: 5.0m, Rated Output Power: 3W, Internal Magnetic Impairment: 78 degrees, Rated Distance: 5.0m, Rated Power Output With 3 watts magnetic arrester / 5 watts battery life 3-5 hours battery life Operation: 5V DC Speakerphone function: Issuing phone calls or video chatting. Built-in bass and resonan radiator, equipped with high-quality high dynamic subwoofer and rich bass, achieving enhanced bass effect. Simple and easy to operate: Through 1000 touch tests, temperature resistant speaker, long hand-held temperature rise. 0.0 Distance: =<10m, Rated Power Output Powered by 3 watts with internal magnetic horn 78 VI / 3 Omega / 5 watts Battery life 3-5 hours Operating voltage: 5V Phone calls, calls, calls, calls, calls, calls, calls, calls, calls Phone calls, phone calls or phone calls. With a strong, durable and comfortable design