Specifications Interface: Bluetooth v.5.0, Handsfree profile Builtin microphone Bluetooth frequency range: 2.402 GHz – 2.480 GHz Transmitting power: 5 mW FM frequency band: 87.5 – 108 MHz Speakers: 3 Ohm, 52 mm diameter RMS power output: 2 x 5 W Frequency response: 60Hz – 20KHz S/N ratio: 75 dB Distortion rate: 10 MicroSD card support: up to 32 GB DC input: MicroUSB, 5 V / 1 A max. Battery: rechargeable 1200 mAh Li battery Dimensions: 395 x 65 x 69 mm Audio cable length: 50 cm Charging cable length: 50 cm Net weight: 615 g