Esperanza WIRELESS TWS CETUS IN-EAR HEADPHONES

TWS wireless headphones are a type of headphones that connect without a cable not only to the playback device, but also to each other. They enable wireless listening to music and answering phone calls. The headphones are small, comfortable and reliable. Headphone functions are controlled using touch function buttons. The headphone case has a built-in 300mAh battery, which allows you to charge the headphones while traveling, training or taking a walk.
BT version: v.5.0.
Supported BT profiles: HSP HFP, A2DP and AVRCP.
Transmitter power: 3dBm
Transmitter frequency: 2.402-2.480GHz
Range: up to 10 meters.
Built-in rechargeable Li-Poly battery:
headphones: 40mAh
charger case: 300mAh
Usage time (talk): up to 4 hours
Music play time: up to 3 hours
Charging time: approx. 1 hour
Frequency response: 20Hz-20,000Hz
Input voltage (charging): DC 5V
The set includes a 25cm microUSB charging cable