Bluetooth Headphones, AUSDOM S-M07 Wired + Wireless Foldable Over-Ear CSR v4.0+EDR Stereo Hands-free Calling w/ Microphone Bluetooth Headphones for MacBook Laptop iPhone (Black) Lightweight & Comfortable - Ultra light weight does not cause any burden to the ears; Ergonomically desighed to fit ear canals, guarantee more stable and comfortable for work-out. Latest Bluetooth Chips - Bluetooth 4.0 chip offers you great listening experience in 30-feet working distance with strong signal; Freedom enjoys your favorite music. Extra-long Playtime - Up to 8 hours of continuous music time with a single chargel. Built-in Microphone - Picking up and hanging up phone calls, CVC 6.0 noise cancellation reduces outside noises and enables clearer sound. Brand Guarantee - 24 hours friendly customer service, 30 days money back, 12 months warranty.