Hetai Tech F17 wired headphone 3.5 mm 1.2 m 30 g 20-20kHz

Wired 3.5 mm stereo headset

The Hetai Tech F17 is a lightweight wired headset with a 3.5 mm jack and a 1.2 m cable. Weighing 30 g, it uses a half-in-ear fit and includes a built-in microphone for hands-free calls. A single-button control handles playback and call functions. Four colour options are available: black, pink, green and yellow.

6 mm dynamic driver response

Each earpiece houses a 6 mm dynamic driver tuned for a 20-20kHz frequency response. The insulation shell is designed to reduce sound leakage while reinforcing low-frequency output. Because the connection is analogue and passive, output level and tonal balance depend entirely on the source device. No battery or active processing is involved.

3.5 mm analogue interface limits

The 3.5 mm plug carries an unbalanced stereo signal plus microphone contact, so compatibility rests on the host socket wiring standard. Cable length is fixed at 1.2 m and cannot be extended without an adapter. Volume control and microphone gain are managed by the connected device, not the headset itself.

Passive isolation only

The half-in-ear design relies on physical fit for noise reduction rather than active cancellation. Ambient sound attenuation will vary with ear-canal shape and tip seal. Users needing stronger isolation or wireless freedom should consider other form factors.