Overview The ACEFAST H19 is an open wireless headset built around 50 mm hollow dynamic drivers and a flexible open/closed listening design. Detachable passive noise-isolation plugs allow the headset to switch between greater environmental awareness and a more enclosed listening experience. Key Features 50 mm hollow dynamic drivers Detachable passive noise-isolation plugs for open or closed listening modes BT 6.0 with dual-device connectivity Up to 55 hours of music playback at 50% volume 10-minute fast charge provides up to 8 hours of music playback Technical Specifications Component Specification ACEFAST Model H19 Produ Type Open Wireless Headset Wireless Connection BT 6.0 Audio Codecs SBC / AAC Transmission Distance 10 m Driver 50 mm Dynamic Hollow Driver Sensitivity 97 dB ± 3 dB Impedance 32 Ω Rated Power 20 mW Frequency Response 20 Hz–20 kHz Single-Mic ENC Battery 400 mAh, 3.7 V Charging Input USB-C, DC 5 V ⎓ 0.32 A Charging Time 1.5 Hours Music Playback Up to 55 Hours at 50% Volume Talk Time Up to 30 Hours at 50% Volume Fast Charging 10 Minutes for Up to 8 Hours Music Playback Materials ABS + Silicone Dimensions 200 × 175 × 95 mm Weight 200 g Water Resistance IPX4 Color Black Compatibility & Important Information Package Contents 1 × ACEFAST H19 Headset 2 × Noise-Isolating Plugs 1 × USB-A to USB-C Cable 1 × Manual Please to review Q: What type of headset is the ACEFAST H19? A: The H19 is an open wireless headset with detachable passive noise-isolation plugs that allow switching between open and closed listening modes. Q: What wireless version does the H19 use? A: It uses BT 6.0 and supports SBC and AAC audio codecs. Q: Can the headset conne to two devices? A: Yes. ACEFAST specifies dual-device connectivity. Q: How long does the battery last? A: ACEFAST specifies up to 55 hours of music playback and up to 30 hours of talk time at 50% volume. Q: Does the H19 support fast charging? A: Yes. A 10-minute charge provides up to 8 hours of music playback. Q: Is the headset water resistant? A: ACEFAST specifies an IPX4 water-resistance rating. Q: What comes in the box? A: ACEFAST lists the H19 headset, two noise-isolating plugs, one USB-A to USB-C cable and one manual.
