1.5.0 Automatic power-on pairing: simplify the complexity, just the headset to pair with your mobile phone, no hassle in the 2. One-button touch farewell press: answer, hang up, play pause, power on and off, up and down , Siri voice phone operation, operation switch wake up 3. Wireless without cumbersomeness: Equipped with a powerful 5.0 Bluetooth chip, CVC8.0 noise reduction is comparable to the sound effect of a thousand yuan headset function 4. Pure presentation of the sound of nature: Let your ears enjoy the music with HF sound effects, movie calls and other content with layers 5. One-button operation bid farewell to tediousness: a function such as turning on and off, easy to operate and listen to music festival calls are completely under your control Transmission range: 10 meters Bluetooth protocol: 5.0 How to use: earplugs Whether single ear or double ear: bilateral stereo Battery life: 0-4 hours (hours) Waterproof performance: IPX3 Colour:black+white Material:plastic Size:50 x 35 x 15mm Package Contents: 2 x Earphones 1 x Earphone charging compartment 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.