Quick overview from the supplier:
Wireless Headset A4tech BH300, 40 mm driver, 32 Ohm, 100db, Bluettoth 5.3/3.5mm, 400 mAh, White
.
Bluetooth v5.3 Wireless Headset
Hybrid Diaphragm Φ40 mm Speaker Unit
Superior Sound Quality
ComfortFit Soft Leather Ear Pads
Eco-Friendly Soft Silicone Headband
One-Step Remote Functional Control
On-The-Go 3-Ways Smart Foldable
Extended Playtime 35H + Speed Charge
Compatible with PC/Tablet/Mobile/PS 4,5/Xbox, etc.
Connection Mode ① Bluetooth v5.3 ② 3.5mm Wired Audio
Operating Range Up to 10m (32 feet)
Built-in Battery 400mAh Lithium Battery
Charging Time About 1.5Hrs
Frequency Response 20 Hz - 20 kHz
Sensitivity 100 dB
Impedance 32 ohm
Microphone
Frequency Response 100 Hz - 10 kHz
Sensitivity -42 dB
USB Type-C Charging Cable 30 cm
AUX 3.5mm Audio Cable 100 cm
