HiFi stereo sound & Clear callsxiwxi TWS Bluetooth earbuds has built-in 2*10mm large dynamic speakers with composite titanium dioxide material, the sound is excellent with lots of bass and clear sounds and beats for mids and high;The ENC headset to achieve real clear call sound and truly HiFi lossless audio. 5.3 Bluetooth & One-step pairingAdopting newest Bluetooth 5.3 technology which is supported HFP, HSP, A2DP, AVRCP Bluetooth protocols. The transmission is faster and more stable in 10m distance which have the stronger anti-interference ability; The headsets enter pairing mode after taking them out of the charging case, and automatically connect with the paired device. Soft silicone ear caps & comfortable to wearImproves the in-ear angle, soft silicone ear caps fit the ear canal cleverly, provide 3 pairs of different sizes' earcaps (M size installed),these wireless bluetooth headphones are small and light, single earbud only weight for 4.8g,choose the earcaps that