The Shokz OpenFit 2+ brings you DualBoost™ technology, an industry-first from Shokz. With two invidual speakers, an extra-large low-frequency unit for deep, thumping bass, and an independent high-frequency unit for sparkling highs, OpenFit 2+ delivers vibrant and dynamic sound. Hear the power of deep bass, crystal-clear mids and highs, and exceptional detail. Weighing approximately 9.4g each, and crafted with an inner layer of Shokz Ultra-Soft Silicone™ 2.0, these Shokz earbuds provide a comfortable, natural fit that seamlessly blends into your everyday life. Key features of the OpenFit 2+ Up to 11 hours of battery life with a single charge. Up to 48 hours of total listening time with the charging case. A quick 10-minute charge delivers 2 hours of listening time. Easy wireless charging: simply place the charging case at the centre of a compatible wireless charger*. The upgraded control system of the OpenFit 2+ combines physical buttons and touch controls for precise and intuitive operation. Easily adjust volume, skip tracks, answer calls, and more with a simple button press. 4 beamforming mics powered by advanced noise cancelling technology and AI algorithms, filter out most of the environmental noise** so you can be heard and stay connected, even in the busiest environments. IP55 Water Resistance*** The OpenFit 2+ is rated IP55 for water resistance. Connect to two devices simultaneously with MultiPoint Pairing, allowing you to effortlessly switch between your phone, tablet, smartwatch, or computer. OpenFit 2+ features an advanced Bluetooth 5.4 chip, delivering lightning-fast connectivity and improved stability. Technical Information Wireless range: 33ft (10m) Continuous playtime (listening time)****: Up to 11 hours of listening time with a single charge, and a total of up to 48 hours with the charging case. Standby time: Up to 270 days Speaker type: Air conduction transducer Bluetooth® version: Bluetooth 5.4 Earbuds - materials: PC, silicone Charging case - materials: PC Battery type: Li-ion battery Continuous playtime (talk time)*****: Up to 8 hours of talk time with a single charge, and a total of up to 36 hours with the charging case. Charging time******: 60 minutes to charge the earbuds with the charging case. 100 minutes to charge the empty case with charging cable. Approximately 180 minutes for only charging the case with a wireless charger. Approximate weight of charging case: 56g Sweat resistance of earbuds: IP55 Charging case not waterproof. Product code: T921-ST-BK Colour: Black *In a 25°C environment with 2W charging power, this device was tested to reach a full charge in 3 hours with a wireless charger.The OpenFit 2+'s charging case is compatible with all Qi-certified wireless chargers. **Drawing insights from the Shokz Lab's experiments simulating scenarios like crossroad, aligning the dual microphones to this position yields an average signal-to-noise ratio improvement of 51dB when the artificial head experiences a sound pressure level of 65-72dB(A). This translates to a 99.97% reduction in environmental noise. ***IP55 water-resistance only applies to the earbuds, and charging case is not rated waterproof. OpenFit 2+ is resistant to sweat and water splashes, suitable for non-aquatic sports and activities. Under specific testing conditions, its waterproof performance has reached the IP55 level based on the IEC 60529 standard. The sweat and waterproof capability is not permanent and may decrease over time due to wear and tear. DO NOT charge a wet OpenFit 2+, nor swim or shower with it. ****This music listening time data was gathered at the Shokz Laboratory in a temperature-controlled environment of 25±2 °C, playing SBC-encoded audio at a 50% volume and all other features set to default. The actual battery life depends on the volume, sound source, degree of environmental interference, custom settings, use habits, and other factors. *****This calling duration data was gathered at the Shokz Laboratory in a temperature-controlled environment of 25±2 °C, at a 50% volume and all other features set to default. The actual battery life depends on the volume, sound source, degree of environmental interference, product features, use habits, and other factors. ******The data is from Shokz Laboratory in a temperature-controlled environment of 25±2 °C. The actual battery life depends on the volume, sound source, degree of environmental interference, product features, use habits, and other factors.