Specification:   Name: TWS Bluetooth 5.0 headphone Brand: INSMA Model: VFM-1 Charging Case Capacity: 3500max Earbuds Battery Capacity: 50mAh Waterproof: IPX5 Standby Time: 240 hours Music Time: 10 hours Charging Time: 1 hour   Features:   1. 3500mah charging case can be used as a power bank, to charge phones.... 2. Automatically pairs. Auto power on after taking out from the charging case. 3. Wireless stereo with left and right channel separation. Both earbuds can be used separately. 4. Support songs and call. 5. Functions include: Call number reminder, last call back, all intelligent Chinese and English voice prompts: boot, pair, power off with low voice prompts. 6. Power capacity can be shown on your phone. 7. Can be connected to two mobile phones at the same time. 8. Automatic connect to and disconnect from phone when powers up and down. 9. Support all Bluetooth mobile phones, tablets, notebooks, singing it, QQ music, movies, etc. 10. Fingerprint touch function. 11. Switch language function by double clicking after booting Package Includes:   2 x Mini Bluetooth headphones(left and right earphones, can be used separately) 1 x Charging case 1 x USB charging cable 1 x User manual