Harman Kardon’s iconic design meets superior function in this high-performance, full-featured, portable Bluetooth speaker: the Harman Kardon Go + Play. It fills your room with a full spectrum of sound powered by its quad drivers. Thanks to the rechargeable battery, you can enjoy up to 8 hours of playtime and charge your smartphones and tablets via USB. Wirelessly connect two Harman Kardon Wireless Dual Sound enabled speakers together to elevate your music listening experience. The Go + Play is also crafted with premium materials - its stainless steel handle and fabric grill add a stylish touch to your home décor or when you are on-the-go. Wireless dual sound Wirelessly connect two Harmon Kardon wirelessly dual sound enables speakers together to elevate your music listening experience. Premium materialsFabric finishing and stainless steel handle highlight your home decor and add style when you're on the go. General Specifications Support A2DP 1.3, AVRCP 1.6, HFP 1.6 Signal-to-Noise Ratio 80dB A-weighted Bluetooth transmitter power 0 to 9dBm Bluetooth transmitter frequency range 2402MHz to 2480MHz Battery charge time 3 hours Battery type 22.2Wh rechargeable battery Bluetooth version 4.1 Transducer size (mm) 2x woofers (90mm), 2x tweeters (20mm) Power supply 19V 3A USB charge out 5V/2.1A ( 5V/0.5A when playing music) Weight (g) 3433 Frequency Response 50Hz-20kHz (-6dB) Rated power 4x25W (AC mode) Bluetooth transmitted modulation GFSK, π/4 DQPSK, 8DPSK Music playing time Up to 8 hours (varies by volume level and audio content) Audio Specifications Frequency Response 50Hz-20kHz (-6dB) Signal-to-Noise Ratio 80dB A-weighted Speaker Specifications Transducers 2x woofers (90mm), 2x tweeters (20mm) Dimensions Height 211.5mm Width 417.5mm Depth 181.5mm Weight 3433g Control and Connection Specifications Bluetooth Version 4.1 Support A2DP 1.3, AVRCP 1.6, HFP 1.6 Bluetooth® Transmitter Frequency Range 2402MHz to 2480MHz Bluetooth® Transmitter Power 0 to 9dBm Bluetooth® Transmitter Modulation GFSK, π/4 DQPSK, 8DPSK