New Anker Soundcore R50i earbuds, used for one day. They have very strong noise isolation and a small amplifier. Price: 50. Specifications: The Anker Soundcore R50i earbuds are True Wireless Stereo (TWS) earbuds featuring 10mm drivers for powerful bass, Bluetooth 5.3 for stable connectivity, long battery life (up to 30 hours with the case), IPX5 water resistance, and clear AI-enhanced calls. The Soundcore app offers 22 customizable EQ presets, fast charging, and mono earbud mode for full control. There's also an R50i NC version with Active Noise Cancellation (ANC) and additional features in the case like a phone holder. Key Specifications: Sound: 10mm dynamic drivers, BassUp technology for enhanced bass. Connectivity: Bluetooth 5.3 for fast and reliable connection. Battery: Up to 30 hours total (with case), fast charging (10 minutes charge for 2 hours playback). Water Resistance: IPX5 rating (sweat and water resistant). Calls: Dual microphones with AI enhancement for clear calls (or 4 microphones in NC version). Customization: 22 EQ presets via the Soundcore app. Additional Features: R50i Version: Mono earbud mode. R50i NC Version: Active Noise Cancellation (ANC), 4 microphones, and a unique charging case with a built-in phone stand. Controls: Intuitive touch controls. Usage: Ideal for workouts, daily music listening, and watching content, providing an immersive experience thanks to powerful sound.