LENYES AIR 301 Wireless Noise Cancelling Earbuds, Lifestyle Bluetooth Earbuds with Active Noise Cancellation, Up to 8.5 Hours of Battery Life Black

Model: LENYES Air 301

Wireless version: V5.3

Support Bluetooth protocol: A2DP1.3

/AVCTP1.4 /AVDTP1.3/AVRCP1.5/HFP1.5/

SPP1.0/SMP/L2CAP4.2

Working frequency: 2.402GHz-2.480GHz

Receiving sensitivity: -93dBm

Bluetooth effective distance: ≥10m

Speaker power: 2mW

Audio signal-to-noise ratio: ≥90dB

Frequency response: 20Hz~20KHz

Built-in battery: 3.7V, 20mAh

Talk time: approximately 2.5 hours (70% volume)

Standby time: headphone about 67 hours

The charging case has a standby time of 

approximately 400 hours

Charging time: about 2 hours