HMG6815 Golf Style Bluetooth V3.0 + EDR Rechargeable Wireless Speaker w/ Mic. / TF - White + Green
Function: play music in SD card bluetooth connection received phone calls Bluetooth: ISSC V3.0 Bluetooth connect distance: 10m Speaker dimension: 40mm (diameter) maximum power: 3W Frequency response: 280Hz-16KHz Signal to Noise Ratio: >=85dB distortion: <= 0.5% Battery: 500mAh charging voltage: 5V+/-0.5V