Energy Sistem Style 4 True Bluetooth earphones. Guarantee 3 years ! (Violet )

Ergonomic, compact, lightweight design to fit comfortably in your ear.
Enjoy your music and calls and forget about running out of battery with the 25-hour battery life (5 hours every time you charge the earphones and 20 additional hours with the charging case).
Use the Voice Assistant feature to find what you´re looking for with voice commands.
Compatible with ESmart Connect app to configure and customise your earphones.

Audio:
Driver diameter: 10 mm
Type: Dynamic
Latency: 100 ms
Frequency response: 20Hz - 20 KHz

Connectivity:
Bluetooth version: 5.1
Bluetooth profiles: A2DP / AVRCP / HFP / HSP
Bluetooth range: 20 m

Battery:
Charging system: USB type-C
Type: LiPo
Capacity: 30 mAh
Voltage: 3.7 V
Battery life - Normal use: 5 h
Charging time: 1.5 h
Type (charging case): Li-Po
Capacity (charging case): 400 mAh

Microphone:
Hands-free: Yes
Microphone - Type: Built-in
Microphone - Sensitivity: -42 dB ± 3 dB (@1 kHz)
Frequency response: 100 Hz ~ 10 kHz