This neckband wireless earphone adopts advanced CSR8635 Bluetooth 4.2 version with multi-point connection technology, supporting simultaneous pairing with two mobile devices. It delivers high-speed and stable signal transmission within 32.8ft, presenting crystal clear stereo sound via 13mm driver unit. Built with a high-sensitive microphone and noise cancellation technology, it effectively filters ambient noise, restoring detailed voice and ensuring clear calling even in noisy surroundings. Powered by a built-in 220mAh lithium battery, it provides up to 9 hours of music playback, 15 hours of talk time and 200 hours of standby time, only needing 3 hours for full charging. Designed with user-friendly control buttons including MFB and volume track keys, it supports one-key operation for call answering, hanging up, redialing, play pause, power on/off and device pairing. The ergonomic neckband design comes with 16.34in neckband and 12.21in adjustable earphone wires, matched with skin-friendly ear tips for snug ear canal fitting. Magnetic collar design allows the earphones to clip together around the neck, preventing falling off during movement. Made of premium TPU and water-resistant silicone gel materials, it resists daily sweat, extending service life perfectly for running, jogging, gym fitness, yoga, hiking and daily travel. Lightweight in design with standard item dimensions and portable weight, it comes with complete accessories to meet daily use, charging and replacement needs easily.