Model: S5 2. Dimensions: 51*40*12mm 3. Case Material: Zinc Alloy Plastic 4. Strap Material: Silicone / Stainless Steel 5. Screen: Ips 6. Screen Size: 1.69inch 7. Resolution: 240*320 8. Chip: Hs6620 Bk3266 9. G-Sensor: Sc7a20 10. Sram Sflash Ui Flash: 90kb 512kb 64mbt 11. BluetootH-Compatible: 5.0 f9: black Bluetooth Version: V5.0 Support: Hfp 1.7, Hsp 1.2, A2dp 1, Avrcp1.6, Spp 1.2 And Pbap 1.0 Charging Voltage: Dc 5v Microphone Sensitivity: -42db Working Temperature: -10-50 °c Frequency Response Range: 20-20000hz Sensitivity: 120db+/-5db Transmission Distance:10m Charging Time:about 1 Hours Accumulated Battery Life: About 220 Hours Headphone Battery Capacity: 50mah Charging Box Battery Capacity: 2200mah