• Features - At just 7.2 g, each earbud is designed to feel light and comfortable for all-day wear. • Flexible Ni-Ti alloy frame and ergonomic ear hook keep the earbuds secure during workouts. • A 30° angled speaker that directs sound precisely towards your ear, so audio stays clear and natural, while your ear stays open. • Smaller, lighter, and sleeker than the previous generation for effortless portability. • Shokz Bassphere driver delivers rich, powerful sound from a compact open-ear design. • OpenBass 2.0 and custom EQ options allow users to enjoy deep bass and a personalized listening experience. • Upgraded pressure-sensitive buttons are easy to find and respond instantly. • Sweat, water droplets, and stray hairs won't cause accidental button presses. • Dual microphones focus on your voice for crisp, private calls. • Al noise reduction minimizes background noise for clear calls in cafes or at the gym. • Specification - Model • SHOKZ T520 • Speaker type • Air conduction transducer • Frequency response • 20~20kHz(±10dB) • Speaker sensitivity • 97.5dB ± 3dB • Audio codecs supported • SBC, AAC • Microphone sensitivity • -38 dB ±1dB • Battery • Li-ion battery • Battery capacity • Earbuds: 56mAh (min.) • Charging case: 600mAh (min.) • Charge voltage • 5V±5% • Battery life • Up to 8 hours of music time with a single charge, up to 36 hours with charging case • Up to 6 hours of calling time with a single charge, up to 26 hours with charging case • Standby time • Earbuds: Up to 1.5 days • In charging case: Up to 180 days • Charge time • Charge the earbuds with the charging case: 60 minutes; • Earbuds + charging case charging time: 100 minutes • Quick charge • A 10-minute charge gives 3 hours of battery life (music) • Bluetooth version • Bluetooth V6.1 • Wireless range - 10m • Compatible profiles • A2DP, AVRCP, HFP • Frequency band • 2402MHz-2480MHz • Sweat resistance • Earbuds: IP55 • Charging case: IP54 • Exterior material - Earbuds: Plastic, silicone, stainless steel • Charging case: Plastic, stainless steel • Lighter. Smaller. No compromise. • OpenFit Air 2 features a compact, featherlight build with a refined ear-hook curve for a secure, comfortable fit that holds all day. Like all Shokz open earbuds, it keeps you aware of your surroundings while your music plays on - whether you're mid-hike, mid-commute, or mid-anything. • 24 Months Local Manufacturer Warranty Store in cool and dry place. China