General Specification Brand Blitzwolf® Model BW-BTS1 Color Black Wearing Type In-ear Technical Parameters Microphone Yes Wired Control Support Bluetooth Version CSR8645 V4.1 Transmission Distance 10m Receive Sensitivity 97dB±3dB Frequency Response 20-20kHz Battery Capacity 110mAh 3.7,V Charging Time (h) 1.5h Talking Time 7h Music Time (h) 6-8h Standby Time (h) 200h Package Included: Blitzwolf® BW-BTS1 Sport Bluetooth Earphone Headphone IPX4 Waterproof Magnetic Adsorption With Mic 1x Blitzwolf BW-BTS1 Bluetooth Earphone 1x Charging Cable 2x Pairs of Earbuds 2x Pairs of Shark Fins Eartips 1x Storage Bag 1x User 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.