Ausdom Lightweight Stereo Wired Wireless Headset Bluetooth 4.0 EDR Over Ear Audiophile Headphones, Deep Bass with Microphone and Volume Control for PC Mac Computers Cell Phones - Black;

Please Note
Charging Port: Micro USB 5V/1A
The high voltage may bring short-circuit problem, and the unit may melted at the charging connection.
If you do not have a suitable charger, you can connect the micro USB charging cable to the computer for charging.

Product Highlights
The best travel companion, soft and comfortable earmuffs, ear cups with a rotatable design, ergonomic in design.
Bluetooth version 4.0 wireless technology, 10 meters of communication distance, better and smoother communication.
Connecting external devices via a 3.5mm audio cable to connect the device, worry free-no more empty battery.
Powerful bass speakers offering an immensely aural delight.

Microphone Spec.
Microphone Unit: Φ6*5mm
Directivity: Omni-directional
S.P.L: -58±2dB S.P.L at 1KHz
Impedance: ≤2.2kΩ
Frequency response: 100Hz-10,000Hz

Speaker Spec.
Speaker diameter: Φ40mm
Impedance: 32Ω
Frequency response: 20Hz-20KHz
S.P.L: 90±3dB S.P.L at 1KHz
Rated power: 20mW

Bluetooth Spec.
Bluetooth version: 4.0
Transmission frequency: 2.40GHz-2.48GHz
Support profile: HSP/HFP/A2DP/AVRCP

Battery Spec.
Battery type: 400mah rechargeable lithium battery
Charging port: Micro USB
Running time: About 20 hours talking/About 20 hours music playing time
Standby time: More than 250 hours
Charging time: 2-3 hours

Package content
1 * Bluetooth headset
1 * Micro USB charging cable
1 * 3.5mm audio cable
1 * User manual