Features: bluetooth 5.0 version of the chip, the product quality is stable and reliable, and the compatibility is strong; Stretched metal battery compartment, the fine sand oxidation process, first-class feel, very brand-name; Ingenious workmanship, high quality, product structure treatment, fault and other detailed treatment, far more than the current market level products. Exquisite appearance, ultra-light products, , wearing a day ear can not be painful; User-friendly operation design, take out the headset automatically pairing, after the first link to the device, then automatically pair, and use the true Hall switch solution to solve, The product continuous charging and return connection, you can have electricity for more than than Half a year. Super strong signal, Long working and standby time, see the specifications below. Balanced sound quality, binaural call, support for up and down songs, pause, call voice assistan. Parameter Specification: Chip&Vision: 5.0 (Ruisheng RTL8763BFR) Waterproof: IP67 Charging Type: USB 5V-1A Case Battery: 400 mAh Charing Time: 90 minutes Ear Battery: 45 mAh Charing Time: 40 minutes Calling Time : 6 hours Music Time: 5.5-6 hours Speaker parameter: "Φ8MM 16Ω/ Middle and low frequency: Φ6MM 16Ω Stand-By Time: 100 hours Support Files|:HSP/ HFP/ AVRCP/A2DP Certification CE, Rosh, FCC, Battery Transport Report, BQB, Appearance Patent Package Included: 2X bluetooth Headset 1X English User Manual 1X charging cable 1X charging base 4X earmuffs