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AfterShokz Sportz M2 (Model AS321) are open-ear sport headphones that sit in front of the ears and use patent-pending dual-suspension bone conduction technology to transmit stereo sound through the cheekbones to the inner ear, bypassing the eardrums. This design keeps ears uncovered so users can hear ambient sounds such as traffic, horns, and warnings—helping make outdoor activities like jogging, biking, skateboarding, hiking, and skiing safer than with traditional earbuds that block hearing.<br /><br />The headphones are designed for comfort and stability during extended wear, featuring a lightweight, ergonomic wraparound headband with a smooth matte black finish and orange transducer pads. A reflective silver strip on the back improves visibility. They are sweat and water resistant and include a deluxe hard storage case.<br /><br />Key specs include 20Hz–20kHz frequency response, 100 dB sensitivity (±3 dB), and an in-line microphone rated at -41 dB (±3 dB) for making and taking calls. Controls are housed in a small in-line box that clips to clothing and supports power on/off, volume adjustment, play/pause/track advance, and call handling. Connection is via a 130 cm cable with a 3.5 mm gold-plated plug compatible with most smartphones, iPhones, iPods, iPads, and MP3 players.<br /><br />Power comes from a rechargeable lithium battery offering up to 12 hours of playback at low volume (higher volume reduces battery life) and a 2-hour charge time via the included micro-USB cable. The unit weighs 45 g (1.6 oz) and includes LED indicators for operation, low battery, and charging. MSRP is $79.95 and the warranty is 2 years.

Meta Tag

Domain Professional Care

Subject Matter Theory

Keywords

AfterShokz Sportz M2

AS321

bone conduction headphones

open-ear sport headphones

dual-suspension technology

ambient awareness safety

wraparound headband

sweat and water resistant

in-line microphone and controls

rechargeable battery 12-hour playback

Professional Care

Theory