Energy Sistem Style 4. Product type: Headphones. Connection technology: True Wireless Stereo (TWS), Bluetooth. Recommended use: Music and Calls. Headphone frequency: 20 - 20000 Hz. Wireless range: 20 m. Weight: 42 g. Product color: Grey

Product type	Headphones
Style of use	In-ear
Suggested Use	Music and Calls
Product color	Grey
Type of headset	Stereofonic
Volume control	Button
Type of control	Buttons, Touch
LED indicators	status
Musical reproduction	Yes
Works with Google Assistant	Yes
Works with Apple Siri	Yes
Connection technology	True Wireless Stereo (TWS)
USB Connector	USB type-C
Bluetooth	Yes
Bluetooth profiles	A2DP, AVRCP, HFP, HSP, SBC
Bluetooth version	5.1
Frequency band	2.4 GHz
Wireless Range	20 m
Auricular design	Intraurarian
Frequency of headphone	20 - 20000 Hz
Driver unit	1 cm
Driver type	Dynamic
Type of microphone	Integrated
Microphone frequency	100 - 10000 Hz
Microphone sensitivity	-42 dB
Type of battery	Integrated battery
Battery technology	Lithium polymers (LiPo)
Input voltage (recharging guard)	3.7 V
Battery capacity for right earphone	30 m
Battery capacity for left earphone	30 m
Continuous audio playback	5 h
Continuous audio playback time (with charging housing)	25 h
Battery charging time (recharging device)	1.5 h
Battery technology (recharging device)	Lithium polymers (LiPo)
Battery capacity (recharging device)	400 mAh
Battery charging indicator	Yes
Charging time	1.5 h
Battery Voltage	3.7 V
Width	65 mm
Depth	35 mm
Height	30 mm
Weight	42 g
Type of packaging	Box
Charging case	Yes
Capacity of charging container	400 mAh
Type of charging housing	Cabin
Connector type for charging housing	USB type-C
Quick Guide	Yes
Cables included	USB type-C