TUNER SECTION FM STEREO FREQUENCY RANGE: 87.5MHz - 108MHz. TUNER SECTION S/N RATIO: > 55dB. BLUETOOTH RANGE (FT): 32 (10m). RMS POWER OUTPUT (WATTS): 4 x 20. PEAK POWER OUTPUT (WATTS): 4 x 40. S/N @1W: 81.2dBA. FREQUENCY RESPONSE (AUX IN): 85Hz - 20KHz. PRE-AMP OUTPUTS (Y/N #): 2pr - Front/Rear. PRE-AMP VOLTAGE: 4V. MINIMUM IMPEDANCE (OHMS): 4. DISPLAY TYPE: LCD. BACKLIT DISPLAY. LCD FONT SIZE: Medium. DIMENSIONS: MOUNTING HOLE (IN): 3. DIMENSIONS: TOTAL MOUNTING DEPTH (IN): 4.1. DIMENSIONS: MOUNTING BEZEL (ROUND) (IN): 4.1. LENGTH (IN): 4. WIDTH (IN): 5. HEIGHT (IN): 4.2. Bluetooth speaker. USB Type-C charging cable. 3.5MM to 3.5MM aux cable. Owner manual. Rockville GO PARTY MAX BASS Large Portable LED Bluetooth Speaker. XL size speaker. Max Bass version with extremely deep and loud bass. IPX5 water resistant for outdoor parties. TWS - True Wireless Stereo Linking of 2 speakers. 5 LED modes that go to the beat of the music (You can also turn the LED off). RMS Power: 35 Watts. Peak Power: 70Watts. Selectable sound styles (Bass Boost and normal). Uses top of the line 3.5 drivers and 2 passive radiator subwoofers to give amazing frequency range and sound quality. DSP tuned in the USA by Rockville HQ to have a very pleasant sound with max bass. Bluetooth 5.0 chipset streams Bluetooth with high fidelity and is efficient on the battery life. Built in USB playback (supports up to 128GB). Plays: MP3/WAV/WMA/FLAC. 3.5MM aux input. Charge Time: 5 Hours. 7.4V 6600mAh Lithium-ion battery supports up 30 hours at low volume, 20 hours at 40% volume, and 5 hours at max volume. Battery charges with included Type-C cable. 4 LED battery life indicators. No noticeable distortion even at max volume. The Rockville GO PARTY MAX BASS is an upgraded version of our GO PARTY D4. This speaker has an additional 10 watts dedicated to bass frequencies as well as a battery that is 50 % larger. This speaker has sound quality normally only found in speakers that are triple the price.