The Astrum ET280 is a wireless Bluetooth neckband earphone designed for dynamic sound, long‑lasting comfort, and all‑day convenience. Powered by 10mm HD dynamic drivers, it delivers crisp highs, clear mids, and deep stereo bass for a live, immersive listening experience. Its magnetic earbud design keeps the earphones securely around your neck when not in use, while the soft silicone ear tips ensure a comfortable fit during workouts, travel, or daily use. With Bluetooth 5.0 multi‑pairing support, the ET280 offers stable connectivity and seamless switching between devices. The in‑line microphone enables hands‑free calling, and the lightweight neckband makes it ideal for sports, leisure, and professional use. A long‑lasting battery delivers up to 12 hours of playtime and 200 hours of standby, making the ET280 a reliable choice for everyday listening. Key Specifications Bluetooth 5.0 wireless neckband design 10mm HD dynamic drivers for crisp, powerful sound Magnetic earbuds for secure holding Soft, comfortable ear tips for long listening sessions Hands‑free calling with in‑line microphone Lightweight and portable build Up to 12 hours of playtime Up to 200 hours standby time 12‑month manufacturer warranty Technical Details Feature Details Model ET280 Driver Unit 10mm Dynamic Bluetooth Version V5.0 Cable Length 30 cm (neckband section) Play Time Up to 12 hours Standby Time Up to 200 hours Charging Time Up to 1.5 hours Frequency Response 20Hz – 22KHz Sensitivity 108 ± 3dB Impedance 16Ω Warranty 12 Months