JBL Flip 6 Portable Waterproof Speaker Features: Louder, more powerful sound IP67 waterproof and dustproof 12 Hours of Playtime Specifications: Bluetooth version 5.1 Maximum music playing time (hrs) 12 Output power (W) 20 W RMS for woofer, 10 W RMS for tweeter Dynamic frequency response range (Hz) 63 Hz - 20k Hz Dimensions (cm) 17.8 x 6.8 x 7.2 Dimensions (in) 7 x 2.6 x 2.8 Weight (kgs) 0.55 Weight (lbs) 1.21 Bluetooth profiles A2DP 1.3, AVRCP 1.6 Bluetooth frequency 2400 MHz - 2483.5 MHz Bluetooth transmitted modulation GFSK, π/4 DQPSK, 8DPSK Bluetooth transmitter power < 10dBm (EIRP) Battery Type Li-ion polymer 17.28 Wh (equivalent to 3.6V /4800mAh) Charging time (hrs) 2.5