**Product Specifications:**
**Brand:** Harman/Kardon
**Model:** AURASTUDIO4 Black Gold Collector's Edition
**Features:** Luxury design, Aura Studio 4, AURASTUDIO4, PULSE5, GO3, SOUNDSTICKS4, FLIP6, BOOMBOX3
**Special Editions:** Luna
**Design:** Minimalist, portable Bluetooth speaker
**Materials:** Premium fabric, anodized aluminum touch panel
**Sound Quality:** High-fidelity sound with balanced bass and clear treble
**Waterproof and Dustproof:** IP67 and IPX7 ratings
**Wireless Connectivity:** Bluetooth 5.3, A2DP 1.3, AVRCP 1.6
**Battery:** Lithium-ion polymer, 17.28Wh, 12 hours playback time
**Charging:** USB Type-C, 2.5 hours charging time
**Dimensions:** 210×78x80mm / 8.3x3.1”×3.2”
**Weight:** 0.71kg / 1.56 lbs
**Package Contents:** 1 Luna speaker, 1 USB Type-C cable, Quick Start Guide, Safety Instructions, Warranty Card
**Speaker Configuration:** 48×90mm woofer, 20mm tweeter
**Output Power:** 1x25W RMS + 1x15W RMS
**Frequency Response:** 60 Hz-20kHz (-6dB)
**Signal-to-Noise Ratio:** >80dB
**Cable Length:** 1.2m / 47.2"
**Maximum Operating Temperature:** 45°C
**Bluetooth Range:** 10m
**Bluetooth Transmitter Power:** ≤15dBm (EIRP)
**Bluetooth Modulation:** GFSK, π/4DQPSK, 8DPSK
**Global Awards:** Red Star Award, Good Design Award, Red Dot Design Award, EISA Award, CES Innovation Award, VGP 2018, VGP 2019
**Q&A:**
**Q:** Does the Harman/Kardon Bluetooth speaker have an auto-off function?
- **A:** Yes, the speaker will automatically power off after 10-30 minutes of inactivity.
**Q:** Can the volume of the Bluetooth speaker be adjusted from a connected smartphone?
- **A:** Yes, if the smartphone supports AVRCP, volume adjustment is possible.
**Q:** Can the Bluetooth speaker be used while charging?
- **A:** Yes, but charging time may be longer during use.
**Q:** Can the Bluetooth speaker be used simultaneously with both Bluetooth and wired connections?
- **A:** No, only one connection method can be used at a time.
**Q:** Why does the Bluetooth speaker experience interference or lag during playback?
- **A:** Interference can be caused by obstacles, nearby devices, or environmental factors.
Harman/Kardon, a renowned audio brand founded by Dr. Sidney Harman over 60 years ago, continues to lead the industry with innovative designs and superior sound quality. From home theaters to car audio systems and multimedia speakers, Harman/Kardon combines artistry and technology to deliver world-class audio experiences. The brand has received numerous accolades, including the Red Star Award, Good Design Award, Red Dot Design Award, EISA Award, CES Innovation Award, and VGP Awards.
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