JBL Go 3 Portable Waterproof Speaker Features: Original JBL Pro Sound Bold style and ultra-portable design IP67 waterproof and dustproof Specifications: Bluetooth version 5.1 Maximum music playing time (hrs) 5 Output power (W) 4.2 Country of origin Made in Vietnam Dynamic frequency response range (Hz) 110 Hz - 20 kHz Dimensions (cm) 8.6 x 6.9 x 4.0 Dimensions (in) 3.4 x 2.7 x 1.6 Weight (kgs) 0.209 Weight (lbs) 0.46 Control and Connection Specifications Bluetooth profiles A2DP 1.3, AVRCP 1.6 Bluetooth frequency 2402 MHz − 2480 MHz Bluetooth transmitted modulation GFSK, π/4 DQPSK, 8DPSK Bluetooth transmitter power ≤ 8 dBm (EIRP) Battery Type Li-ion polymer 2.7Wh Charging time (hrs) 2.5