IPX4-rated for sweat and water resistance, the MA650 Wireless Neckband Headphones from RHA Technologies is designed for use at home, in the gym, or outdoors. They pair with your smartphone over Bluetooth and support NFC for simplified pairing with supported devices. The internal battery lasts for up to 12 hours and can be monitored using an integrated LED battery level indicator. To help save power, the battery will automatically turn off after 20 minutes of inactivity. The earpieces feature custom dynamic model 380.1 drivers, a frequency range of 16 Hz to 22 kHz, a noise-isolating Aerophonic design, and an aluminum build for increased durability. A universal remote and microphone support track and call control, as well as compatibility and control for digital assistants such as Google Assistant, Siri, and Cortana. Other features include a SecureFlex silicone band and aptX codec support for CD-quality audio.