JBL 104-BT, Speaker Set with Bluetooth 5.0, Consists of a master- and a slave speaker, 1x 4.5"" Bass reflex woofer, 1x 0.75"" Coaxial tweeters, 60 W Class D amplifier (30 W per speaker), Frequency response: 60 - 20,000 Hz, Dispersion pattern: 120° x 120°, Max. SPL (sound pressure level): 104 dB, 1 RCA Input,