The Astrum HT320 delivers powerful, immersive audio with 40mm dynamic drivers, producing deep bass and clear stereo sound for music, movies, and calls. Bluetooth V5.3 ensures stable wireless connectivity with smooth audio synchronization across Android, iOS, and PC devices. The lightweight over‑ear design includes soft noise‑isolating earpads and an adjustable headband for long‑session comfort. A foldable frame enhances portability, while on‑ear controls provide access to volume, playback, TF card mode, and AUX input. With up to 20 hours of playtime, USB‑C fast charging, and a built‑in hidden microphone, the HT320 is designed for everyday convenience and versatility. Key Specifications Bluetooth 5.3 wireless connectivity Active Noise Cancellation (ANC) 40mm dynamic drivers Built‑in hidden microphone Up to 20 hours playtime USB‑C fast charging TF card and AUX input Foldable lightweight design (157g) 10 meter wireless range Technical Details Feature Details Bluetooth Version BT5.3 Play Time Up to 20 hours Charging Time Up to 1.5 hours (USB‑C) Impedance 32 ohm Driver Size 40mm Connectivity Range 10 meters Weight 157 g Dimensions 195 × 178 × 80 mm Warranty 24 Months What’s in the Box HT320 Wireless Headset USB‑C Charging Cable User Manual