Product parameters:2.4G Scan frequency:2.3~2.6G5.8G Scan frequency:5.1~5.9GRecognition distance:150~350m(Depends on the TF power)Charging input voltage:5V/500mAOperating time:≈10 hoursBattery capacity:250mAhBattery charging time:≈5 hoursAttention: This product does not support PD fast charging. Plea..