| Specifications | Details |
| Brand / Model | ACEFAST / H19 (ACESOUND Series) |
| Product Type | Open Wireless Headset with Convertible Open / Closed Dual-Mode |
| Connectivity | • Bluetooth 6.0 (Powered by AC7006F chip)
• Supports Multipoint Connection (simultaneous pairing with 2 devices)
• Audio Codecs: SBC, AAC |
| Drivers & Audio | • 50mm Professional Dynamic Hollow Drivers
• Frequency Response: 20Hz – 20kHz
• Sensitivity: 97dB ±3dB |
| Battery & Playtime | • 400mAh built-in battery
• Up to 55 hours of music playback (at 50% volume)
• Up to 30 hours of talk time |
| Fast Charging | Quick charge support: 10 minutes of charging provides up to 8 hours of playback (Full charge in ~1.5 hours) |
| Call & Control Features | • Omnidirectional HD microphone with Single-Mic ENC (Environmental Noise Cancellation)
• Convenient Multi-Function Control Knob (volume, media playback, and call management) |
| Key Special Features | • Convertible Listening Design: Removable noise-isolating plugs to switch between open-ear and isolated modes
• Ultra-Low Latency Gaming Mode for synchronized audio-visual performance |
| Materials & Comfort | • Lightweight design (~200g) featuring durable ABS and silicone construction
• Breathable fabric headband and soft ear pads for all-day wear |
