i7 i7s tws bluetooth earphones wireless earbuds sports handsearphone headset with charging box for iphone xiaomi phone

vocalism principle : balanced armature control button : no active noise-cancellation : yes communication : wireless volume control : no sensitivity : 123db wireless type : bluetooth is wireless : yes line length : nonem support app : no function : common headphone function : for mobile phone function : sport connectors : none model number : i7s tws for all smartphones support memory card : no waterproof : yes with microphone : yes model : as09 i7 tws feature 1 : with a2dp