Enhance Your Music Experience with Long-Lasting Power : The NYI replacement battery for Harman Kardon Onyx Studio 5 and Onyx Studio 6 ensures uninterrupted playtime, allowing you to enjoy your favorite tunes for longer. Excellent Compatibility : Designed specifically for the Harman Kardon Onyx Studio 5 and Onyx Studio 6, the NYI replacement battery ensures a perfect fit, hassle-free installation, and reliable performance. Powerful and Reliable : With a voltage rating of 3.7V and an impressive capacity of 3500mAh, this replacement battery provides a stable and long-lasting power source for uninterrupted, immersive audio. High-Quality Construction : Crafted with precision and utilizing premium-grade components, the NYI replacement battery ensures optimal performance, longevity, and reliable power delivery to your Harman Kardon speakers. Satisfactory After-sales Service : We provide an 12 month warranty for the upgraded Harman Kardon replacement battery. If you have any questions, please contact us by email! PS: The package includes 1 Harman Kardon replacement battery, 1 screwdriver handle, 1 Anti-shock strips, 1 Battery installation manual, 1 metal crowbar. Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker