Material: PC BT version: 5.3 Connection Range: ≤12m Speaker Diameter: 13mm Speaker Sensitivity: 108±3dB Impedance: 32Ω Frequency Response: 20-20KHZ SNR: >70 Earbuds Weight: About 4g*2 Earbuds Battery Capacity: 35mAh Playing Time: About 6h Calling Time: About 3h Earbuds Charging Time: About 1h Charging Case Weight: About 28.7g Charging Case Battery Capacity: 400mAh Charging Time for the Case: About 2h Charging Case Input: 5V Battery time: About 26h Charging Case Size: 47.2*27*62mm Compatibility: For Apple/Android devices with BT function Including: Earbud * 1 pair, A pair of large and small ear caps, Charging case * 1, Type-C charging cable * 1, User manual*1 Features: ① Dual mic ENC, high sound quality. ② Upgraded BT 5.3, sensitive touch control. ③ 13mm dynamic drivers, polymer composite diaphragm. ④ 6hrs playtime for the earphones, 26hrs for the charging case.