Energy Sistem Serenity Bluetooth earphones ANC

Audio
ANC - Noise reduction: -30 dB
Speaker diameter: 10 mm
Type: Dynamic
Impedance: 32 Ω
Latency: 200 ms
Frequency response: 20 Hz ~ 20 KHz
THD (< 1%): Yes
ANC - Frequency band: 20 Hz ~ 1 KHz

Connectivity
Voice assistant (Google, Siri): Yes
Bluetooth version: 5.4
Bluetooth - Class: 2
Bluetooth - Frequency band: 2.4 GHz
Bluetooth profiles: A2DP / AVRCP / HFP
Bluetooth range: 20m
Compatible Bluetooth codecs: AAC / SBC
Bluetooth - Maximum output power: < 20,00 dBm
TWS technology: Yes

Battery
Charging system: USB type-C
Type: LiPo
Capacity: 40 mAh
Voltage: 3.7 V
Battery life - Normal use: 5 h
Battery life - ANC ON + MUSIC ON: 5 h
Charging time: 1 h
Charging case: Yes
Type (charging case): Li-Po
Capacity (charging case): 500 mAh
Voltage (charging case): 3.7 V
Battery life (charging case): 20 h
Charging time (charging case): 2 h

Microphone :
Hands-free: Yes
Microphone - Type: Built-in
Microphone - Sensitivity: -38 dB ± 3 dB
Frequency response: 100 Hz ~ 10 kHz
ENC: Yes

Power supply :
Connector: USB type C

Compatibility: Mac / PC Windows / Smartphone / Tablet / TV
Playback control: Yes
Volume control: Yes
IPXX certified: IPX4
Splashproof: Yes

Size and weight:
Height: 50 mm
Wide: 64 mm
Depth: 25 mm
Weight: 40 g