MH3 Headphones With Speaker $40

Specifications: support memory card: yes rated out put:3w*2 speaker:4ω,3w,φ40mm battery:350ma bluetooth version:4.2 (build-win 4.2 4263+6687e) bluetooth profiles: hfp/ volume control: yes active noise-cancellation: no with microphone: yes volume control: yes active noise-cancellation: no with microphone: yes input power: dc 5v frequency response:20hz-20khz signal to noise ratio:-75db~-95db the distortion degree:≦1% charging time: around 2.5 hours playing time: headphone mode around 7hours,speaker mode3.5hours