high quality brand new carbon brush holder durable equipment for rs550 micro 1 pcs mtb motor parts power tools

1. Main control chip: Spreadtrum SL8541E2. Display: 1.95 inch water drop screen / Resolution: 240x 282, full sticker 3. Touch screen: 1.95 inch /OGS process, ZIF interface COB/full screen 4. Memory: 1GB+16GB5. Face unlock: Support 6. Battery: High-capacity and high-voltage polymer lithium battery, 680m. Ah capacity 7. Speaker: 0715 single large magnetic waterproof speaker 8. Microphone: 0415/waterproof 9. Motor: 0820 flat motor 10. Camera: Front and rear cameras, 0.3MP11. SIM card slot: Single SIM, Nano SIM card 12. Charging interface: magnetic, special charging base 13. Wi. Fi: Yes, WIFI positioning and Wi. Fi connection/Wi. Fi 2.4GHz 14. 2G GSM: B3, B5, B815. 5. WCDMA: B1, B5, B816. 4G FDD-LTE: B1, B3, B5, B8; TDD-LTE: B38, B39, B40, B4117. Data link: WIFI/Bluetooth/Traffic 18. Bluetooth: Yes, Bluetooth 4.219. GPS: Yes, Passive 20. Gravity sensing: Support, three-axis sensor 21. Heart rate: Support, heart rate/blood oxygen detection 22. Power button: SOS function button, down button 23. Rotary button: Yes, mechanical encoder (single click to return, double click to switch UI style, long press AI)24. Phone: 2G/3G/4G (VOLTE required)25. Internet access standard and speed: GPRS/LTE26. System/OS: Android 9.027. UI: Built-in multiple UI styles 28. Language: Chinese, English 29. Software functions: Dynamic dial, phone book, dial pad, call history, text messages, micro chat, heart rate, blood oxygen, QR code, tools (step counting, alarm clock, calculator, stopwatch), settings, AI robot, adding Friends, class schedule, super power-saving mode (running in the background on We. Chat), student We. Chat, Alipay, Ziteng Market, QQ, Xiaoyou classmates (watch version of homework help), etc