· COMPATIBLE WITH MUSICOZY SLEEP HEADPHONES: Designed specifically for MUSICOZY Bluetooth Sleep HEADPHONES, this Bluetooth module offers seamless integration and easy disassembly for replacement or upgrades. Only compatible with MUSICOZY products for optimal performance.· ADVANCED BLUETOOTH 5.4 TECHNOLOGY: Equipped with the latest Bluetooth 5.4 technology, this module ensures stable, high-speed connections, while supporting LHDC and LDAC audio codecs for superior sound quality. Experience wireless audio with up to 24-bit/96kHz high-resolution sound, three times the data rate of traditional SBC codecs.· HIGH-END SOUND PERFORMANCE: Featuring composite drivers and support for Hi-Res Wireless audio, this module delivers crystal-clear sound with deep bass and balanced highs, ensuring you enjoy high-fidelity audio during sleep, relaxation, or while traveling.· EXCEPTIONAL PROTECTION & SAFETY FEATURES: Includes advanced NPC high-temperature protection, over-voltage protection (OVP), and battery protection circuitry for peace of mind. The pure cobalt battery ensures long-lasting power, while dual-microphone ENC (Environmental Noise Cancellation) technology guarantees clear calls with noise reduction.· DURABLE DESIGN WITH EASY CHARGING: The module is built with a flexible and durable cord, and comes with a sturdy Type-C USB charging interface. It is designed to withstand everyday use without breaking or tangling, and allows for quick and convenient charging.