A multifunctional control knob provides intuitive operation, while the adjustable headband, memory-foam earcups and 90-degree rotating earcups support comfortable use and easier carrying. The built-in 500 mAh battery provides up to 55 hours of working time with ANC off or 45 hours with ANC on. Key Features 30 dB Active Noise Cancellation: ANC technology helps reduce surrounding noise during listening. 40 mm Hi-Fi Drivers: Professional-grade dynamic coil speakers with a 20 Hz–20 kHz frequency response. Bluetooth 5.4: Wireless connectivity with SBC and AAC audio protocol support. Long Working Time: Up to 55 hours with ANC off and 45 hours with ANC on. Multifunctional Knob: Provides convenient and intuitive headset control. Comfortable Adjustable Design: Features an adjustable headband, memory-foam earcups and 90-degree rotating earcups. Technical Specifications Component Specification ACEFAST Model Produ Type Wireless ANC Headset Bluetooth Version Bluetooth 5.4 Audio Protocol SBC / AAC Transmission Distance 10 m Driver 40 mm, Hi-Fi level Frequency Response 20 Hz–20 kHz Noise Cancellation 30 dB ANC Battery Capacity 500 mAh, 3.7 V Input DC 5 V ⎓ 1 A (USB-C) Charging Time 2.5 hours Working Time 55 hours (ANC off), 45 hours (ANC on) Dimensions 177 × 78 × 200 mm Weight 221 g Colors Grey / Silver Compatibility & Important Information The headset uses Bluetooth 5.4 wireless connectivity. SBC and AAC audio protocols are supported. ANC working time is rated at up to 45 hours; with ANC switched off, working time is rated at up to 55 hours. The headset charges through USB-C with a specified DC 5 V ⎓ 1 A input. The earcups rotate 90 degrees for easier carrying. Package Contents ACEFAST H9 Headset × 1 USB-A to USB-C Cable × 1 Audio Cable × 1 Storage Bag × 1 Manual × 1 Please to review Q: Does the ACEFAST H9 support active noise cancellation? A: Yes. It supports 30 dB ANC noise cancelling. Q: Which Bluetooth version does the H9 use? A: Bluetooth 5.4 with SBC and AAC audio protocols. Q: How long does the battery last? A: Up to 55 hours with ANC off and 45 hours with ANC on. Q: How long does charging take? A: 2.5 hours. Q: What drivers does it use? A: 40 mm Hi-Fi level drivers with 20 Hz-20 kHz frequency response. Q: What is included in the package? A: Headset, USB-A to USB-C cable, audio cable, storage bag and manual, one of each.
