AUR IN EAR M2 FUNCIÓN ENC AND DUAL MICS INPUT VOLTAJE DC 5V±0.25V BLUETOOTH PROFILES A2DP/AVRCP/HFP BLUETOOTH VERSIÓN V5.3 BLUETOOTH AUDIO DECODING FORMATO AAC/SBC BATTERY BUILT-IN LI-ION BATTERY (300MAH) FOR CHARGING CASE BUILT-IN LI-ION BATTERY (30MAH) FOR EARBUDS CHARGING TIME 2 HRS TALK TIME 3 HRS STAND TIME 70 HRS PLAY TIME 4 HOURS(AT 80% VOLUME) SPEAKER IMPEDANCIA 32O±10% DRIVING UNIT 13 MM SPEAKER RECEIVING SENSITIVITY 106+3DB MIC SENSITIVITY - 38DB±1DB DISTANCIE 15-20 METERS FRECUENCIA 20HZ-20KHZ PRODUCTO NET WEIGHT 3.4GRAMS (FOR SINGLE EARBUD) 34.2±1GRAMS (FOR WHOLE UNIT) OPERACIÓN MODE TOUCH DISPLAY FUNCIÓN LED INDICADOR DISPLAY