Specifications: General Specification Model D9 Color Sliver Wearing Type In-ear Technical Parameters Microphone Yes Wired Control Support bluetooth Version v4.1 Transmission Distance 10m Frequency Response 20-20kHz Battery Capacity 70mAh, 3.7V Charging Time (h) 1-2h Working Time (h) Approx. 6h Package Included: Bakeey™ D9 In-ear Sport Waterproof Sweatproof Magnetic Absorption Voice Prompt V4.1 bluetooth Earphone 1* D9 bluetooth Earphone 1* USB Cable 2* pair of earmuffs 1* Manual Ships in 7 business days. It is shipped from China. Delivery is provided by China Post Air Mail. Delivery time depends on the couriers, local customs in your country also holidays, weather conditions. Usually it takes from 39 to 60 days, depending on the customs at your country.