The Ultimate Fit Sport X10 have unique ear hooks that rotate up to 210°. Rotate to find the perfect spot for a secure and comfortable fit that won't budge, even during intense exercise sessions. Pumped-Up Bass Sport X10 delivers a double hit of bass enhancement. The dynamic acoustic system is customized to produce sound with 2× more bass. On top of this, our proprietory Bass - Up technology analyzes sound in real-time and intensifies the bass to the max. Effective Sweat Protection Soundcore's Sweat - Guard technology is inspired by the structure of a submarine to make Sport X10 workout earbuds sweatproof. Work up a sweat knowing that the internal components are protected against damage. Enhance Your Experience The soundcore app allows you to make Sport X10 workout earbuds your own. Use the in-app breathing exercises to focus on your breathing before working out, tailor the sound profile with 22 EQ presets, and customize controls. Ultra-Stable Connection Bluetooth 5.2 ensures that your Sport X10 workout earbuds maintain a consistently stable connection with your device throughout the duration of your workout. Calls with Superior Clarity Sport X10 has 6 microphones and noise cancellation technology to pick up your voice clearly and block out background noises. If it's a windy day, turn on Wind Noise Reduction in the soundcore app to further improve call quality. Easy to Open Charging Case Simply press the button on the charging case to open with just one hand. It's a small detail, but one that saves you time and effort when you're busy. Easy to Control Both earbuds have a button that is simple to use, even mid-workout. Use the soundcore app to customize the controls to suit your needs. On-the-Go Listening Sport X10 are small and lightweight to ensure they're comfortable for long listening sessions. The slim charging case easily fits in your pocket or gym bag, without taking up lots of space. Input 5 V 0.5 A Rated output power 5 m - W (@1% THD) Battery capacity 55 m - Ah x 2 (earbuds); 540 m - Ah (charging case) Charging time 2 hours Playtime (varies by volume level and content) Up to 8 hours (Total 32 hours with the charging case) Driver size 10 mm x 2 Frequency response 20 Hz - 20 k - Hz Impedance 32 O Waterproof level IPX7(earbuds) Bluetooth version 5.2 Bluetooth range 10 m / 33 ft