Package Dimensions: 21.5 x 15.1 x 4.5 cm; 200 Grams Batteries: 2 Lithium Polymer batteries required Revolutionary auto-pause when the magnetic earbuds are connected and auto-play when pulled apart The intelligent voice accelerometer recognizes when you’re speaking and works with Cvc 6.0 chip enabled dual beamforming microphones to filter out external noise sweat proof