Model Number: AKB-BSH569E Key Specifications/Special Features: Stereo Bluetooth earphones with proprietary metal coatingSpecial speaker driver materialProprietary metal coating to enhance stiffness while providing an excellent self-damping propertySpeaker diameter: Φ10mmImpedance: 20ΩS.P.L: 102dB S.P.L. at 1KHzRated power: 10mWFrequency response: 20Hz - 20KHzMic type: MEMS micMicrophone unit: 3.7*2.2*1.1mmDirectivity: omni-directionalSensitivity：S.P.L: -42±3dBImpedance: ≤2.2KΩ
Frequency response: 30-16,000Hz
Operating voltage: 4.5V

1.Compatible with all audio equipment with Bluetooth functions, such as PC, iPad, iPod, cellphone, tablet PC and MP3
2.HSP, HFP, A2DP, AVRCP
3.Bluetooth protocol standards: Bluetooth V4.1 supported
4.Receiver distance: 10m/360°
5.Battery: 3.7V/60mAh*2 lithium-ion battery
6.Charging time: less than 2 hours
7.Successive working time: about 6 hours
8.Standby time: 180 hours