The Harman Kardon Onyx Studio 8 features include;

• 8 hours of battery life
• Wireless Dual Sound: wirelessly connect two Harman Onyx Studio 8 speakers for an elevated music listening experience
• Woofer 1 x 120mm, Tweeter 2 x 20mm
• 50W RMS Rated output power
• Power supply 100-240Vac, 50Hz/60Hz
• Frequency response 50Hz – 20kHz (-6dB)
• Signal-to-noise ratio > 80 dB