JOYROOM JR-H12 Wireless Bluetooth Headphone Over-Ear Sport Stereo Bass Headset Earphone with 3.5mm Audio PortFeature:1. Bluetooth adopts ed CSR Bluetooth solution, which has better efficiency and lower power consumption.2. Bio-protein leather earmuffs and headbands are used to make the ear feel soft, wear comfortable and breathable, and effectively attach to the ear to isolate foreign sounds.3. The ear mask rotates 90 degrees, easy to adjust the angle and convenient to carry.4. 40mm high-drive high-quality unit, 3D high-definition stereo effect, equipped with BASS professional bass attack and defense chip, with shock bass effect.5. Strong compatibility with various system platform products.6. Metal arm, fine grind processing, stretching convenient, strong, safe and durable.7. There are 2 choices for decorative films, plastic or metal trim.8. Surface metal piano paint, bright and scratch resistant.9. Double mode listening, whatever you want.10. Multifunctional ple button design, switching songs, tuning, pause, answering the phone, easy to control.11. The built-in super large capacity 300mAh battery can be continuously played for 15 hours, with standby time up to 140 hours.Specification:Brand: JOYROOMProduct model: JR-H12Color: BlackBluetooth version: Bluetooth4.1Bluetooth protocol: HSP/HFP/A2DP/AVRCPStandby time: 140 hoursTalk time: 17 hours.Port: Bluetooth, 3.5mm audio input portBattery: 3.7V 300mAh polymer lithium batteryCharging time: 2 hours.Sensitivity: -42dB±3 dBHorn impedance: 16Ω±15%(at 1KHz)Speaker diameter: 40mmPackage size: 234*221*84mm/9.21*8.7*3.3''Net weight: 177.5gGross weight: 613.8gNote: Please allow 1-3mm differs due to manual measurement.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.