XO BS27 ΑΚΟΥΣΤΙΚΑ HANDSFREE ΣΤΕΚΑ BLUETOOTH ΜΑΥΡΟ

Sound Channel System Dual ChannelControl mode 3 physical buttonsBluetooth version: Bluetooth V5.0Support Bluetooth protocol: A2DP v1.3, AVRCP v1.6, HSP, HFPReceiving sensitivity: -85dBmBluetooth effective distance: : 10MHeadphone amplifier type: chip built-inAudio signal-to-noise ratio: S/N ?93dBSpeaker unit: speaker 14MM true copper ring speaker 16ohmMicrophone MIC MEMS, condenser microphone, -42dB+-2,Built-in battery: Lithium battery -3.7V, 170mAh + protection boardStandby time: about 170 hoursMusic time: about 11 hours (80% volume)Talk time: about 9.5 hours (80% volume)Charging input standard: DC5V-60mA Micro USBCharging time: about 1.5-2HBattery cycle life: charge and discharge cycle ?300 timesFunction: Insert card TF card up to 64gb