usams wired stereo headphones EP-39 HSEP3901 — 3.5 mm jack, black

Wired stereo headphones usams EP-39 (model HSEP3901) feature a 3.5 mm jack and a black finish. These in-ear corded headsets are designed for wired audio playback on smartphones, laptops, tablets and portable audio players with a standard 3.5 mm port. The silicone in-ear design and 10 mm drivers deliver a compact listening solution with a frequency response covering 20 Hz–20 kHz for general-purpose music and voice reproduction, while the integrated microphone supports clearer calls.

Advantages

The EP-39 provides Hi‑Fi style stereo sound with 101 dB speaker sensitivity and a 32 Ω impedance for reliable acoustic performance across common devices. A selected TPE cable with 1.2 m length improves durability and mobility for everyday use. The silicone ear tips offer a secure and comfortable fit, and a one-button inline control simplifies call handling and basic playback functions. The construction uses PC and TPE materials for a balance of light weight and resilience.

Suitable for

• Listening to music on smartphones, tablets and laptops with a 3.5 mm audio jack
• Making and receiving voice calls with the inline microphone
• Portable use during commuting, travel or office work
• Connecting to MP3 players and other legacy audio devices with 3.5 mm output

Key specifications

• Connector: 3.5 mm jack
• Cable length: 1.2 m (TPE)
• Driver diameter: 10 mm
• Frequency response: 20 Hz – 20 kHz
• Speaker sensitivity: 101 dB
• Impedance: 32 Ω
• Microphone sensitivity: -48 ± 3 dB
• Housing/materials: PC + TPE with silicone ear tips

How to use

Insert the 3.5 mm jack into the audio port of your smartphone, tablet, laptop or player. Choose the silicone ear tips that provide the best fit and insert the earbuds gently into your ear canals. Use the inline one-button control to answer or end calls and to perform basic playback actions if supported by your device. Keep the cable untangled and avoid sharp bends to maintain long-term cable integrity.

Usage recommendations

For optimal sound and comfort, select the ear tip size that creates a comfortable seal; this improves bass response and passive noise isolation. Avoid exposing the headset to moisture or extreme temperatures, and store it in a protective pouch when not in use to extend service life.