XO BS28 Αθλητικό Bluetooth Ακουστικό Κεφαλής

■Sound Channel System Dual Channel■Control mode 3 physical buttons■Active and passive: active■Bluetooth solution BK3266Bluetooth version: Bluetooth V5.0Support Bluetooth protocol: A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, and SPP v1.2■Bluetooth operating frequency: 2.402GHz-2.480GHz■Receiving sensitivity: -89dBm■Bluetooth effective distance: :Rating 3-5mW■Headphone RF power level Class2■Headphone amplifier type: chip built-in■Audio signal-to-noise ratio: S/N ≥92dB■Frequency response: 50Hz～20KHz■Speaker unit: real copper ring full-range speaker Φ10mm@16ohm■Microphone MIC MEMS, condenser microphone, -42dB+-2,■Built-in battery: Lithium battery -3.7V, 150mAh, + protection board■Standby time 7-8 days■Music time: about 11 hours (70% volume)■Talk time: about 11 hours (70% volume)■Charging input standard: DC5V-1000mA TPYE-CCharging time: about 1.5 hours■Battery cycle life: charge and discharge cycle ≥300 time