Best Smart Audio Bluetooth5.0 Glasses BG-01-2001

Hight Light Speaker SpecificationsImpedance 21±3.2ΩSensitivity 85±3dB（At1KHz）Frequency Range 20-20K HZ（Output S.P.L±20dB）Rated Output Power 18mWMax Output Power 25mWTHD ≤3%（At 1KHz，1MW/0.146V）Diameter ∮16.2mmMicrophone SpecificationsSize 3.76(L) x 2.24(W) x 1.1(H) mmSensitivity -44±2dB，f=1KHZ，0dB = 1V/PaDirectivity OmnidirectionalS/N Ratio 56dB,S/N f=1KHZ,S.P.L = 1Pa   Specification Chip Type PAU1603S1R1Bluetooth Version V5.0 Transmit Power Class 1， VBAT=3.7V 9.5±2.5dbm Operating Frequency 2.4G ISM Band（2.402-2.480GHZ）Sensitivity -87dB (BER，<0.1% BER)Signal To Noise Ratio 97dB Frequency Range 20-20KHZ（AP525 +/-3dB Close EQ）Charging Voltage 5VOperating Voltage 3.7V Support Agreement HFP v1.7 \ HSP v1.2 \ A2DP v1.3 \ AVRCP v1.6 \ SPP v1.2 Charging Time About 2hCharging Current About 200mATalking Current About 18mAMusical Current About 21mAVoltage Threshold 4.15±0.1VVoltage Of Low Power Off 3.2V±0.15V