I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Thank you for shopping and have a nice day. Specifications: There is a charging case that supports digital display, allowing you to carry the headset with you without worrying about charging. It uses bluetooth-compatible 5.0 chip, which can bring you stereo music immediately and it has noise reduction function with digital charging box. You can adjust music playback or answer incoming calls with touch controls. Item Name: bluetooth-compatible Earphone Material: ABS Bluetooth Version: 5.0 Supported Protocols: HFP 1.7, HSP 1.2, A2DP 1, AVRCP 1.6, SPP 1.2, PBAP 1.0 Charging Voltage: DC 5V Microphone Sensitivity: -42dB Working Temperature: -10-50 Degrees Celsius Frequency Response Range: 20-20000Hz Headphone Sensitivity: 120dB +/- 5dB Transmission Distance: 10m Charging Time: 1 Hour (Approx.) Cumulative Battery Life: 180 Hours (Approx.) Headphone Battery Capacity: 40mAh (included) Charging Box Battery Capacity: 300mAh (included) Features: Rechargeable, bluetooth-compatible Connection, Wireless Charging Box Size: 6cm x 6cm x 2.6cm/2.36" x 2.36" x 1.02" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x bluetooth-compatible Earphone 1 x USB Charging Case 1 x USB Charging Cable 1 x User Manual a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a