The Cellularline Motion in-ear Bluetooth stereo earphones are designed for those who need a reliable wireless audio solution with the convenience of a neck-band style. These headphones utilize Bluetooth 4.3 connectivity to maintain a stable link with your device within a range of up to 10 meters, making them practical for moving around your home or office without being tethered to your phone. Built with a durable metal housing and dynamic drivers, they deliver a frequency response from 20 Hz to 20,000 Hz and a sensitivity of 118 dB SPL/mW. The integrated in-line microphone includes an answer button and remote control for managing calls and playback, while the volume controls allow you to adjust your audio on the fly. To keep things tidy when not in use, the earbuds feature a magnetic closure that prevents the cables from tangling around your neck. Charging is handled via a Micro-USB port, requiring about 2 hours to reach full capacity. With an impedance of 20 Ohm and a signal-to-noise ratio of 114 dBA, these earphones provide a balanced listening experience for users who prefer the security of a neck strap over completely cordless buds.