PRODUCT NAMEAKZ Wireless Bluetooth Headset OVERVIEWThe AKZ Wireless Bluetooth Headset is designed for clear sound, stable connectivity, and all-day comfort. With Bluetooth 5.3 technology, HD audio, and a long-lasting rechargeable battery, it’s ideal for music, calls, online classes, gaming, and everyday use across multiple devices. FEATURES Bluetooth 5.3 for fast and stable wireless connection 40mm speaker drivers for clear and balanced sound HD 4D sound effect for an immersive audio experience Built-in omnidirectional microphone for clear calls Supports Micro SD card for standalone music playback AUX input (3.5mm stereo jack) for wired use Long battery life for music and standby Comfortable over-ear design for extended wear Compatible with smartphones, tablets, laptops, and computers PRODUCT INFORMATION Speaker Size: 40mm Frequency Response: 20Hz – 20kHz Impedance: 32Ω Sensitivity: 112dB ± 3dB Max Input Power: 20mW Wireless Version: Bluetooth 5.3 Wireless Range: Up to 10 meters Supported Profiles: A2DP, AVRCP, HSP, HFP Battery Type: Built-in rechargeable lithium battery Battery Capacity: 400mAh Music Time (Light Off): Up to 18 hours Music Time (Light On): Up to 8 hours Standby Time: Up to 40 hours Charging Time: Approx. 2.5 hours Input Port: 3.5mm AUX