1. Bluetooth 3.0 standard interface 2. Effective operating distance: 10 meters 3. Modulation mode: GFSK4. Working voltage: 3.0-4.2V5. Working current: less than 2.5mA6. Standby current: less than 0.3mA7. Product size: 25.8x 21x 2.5cm 8. Charging current: more than 200mA9. Standby time: more than 100 days 10. Charging time: 3-4 hours 11. Lithium battery capacity: 200mah / 400m. Ah (backlit)12. Sustainable working time: 100 hours / 3-5 hours (when the light is turned on)13. Lithium battery life: 3 years 14. Button force: 80g 15. Key life: 5 million clicks 16. Working temperature: -10 to 55 degrees Celsius 17. Product material: leather case with built-in pen slot, ABS plastic keyboard, keyboard with seven-color light (only backlight models)

1. Bottom cover with heart rate sensor + wireless charging module replacement for Samsung Galaxy Watch 4 Classic 46mm SM-R890 R895 2. Replace your broken or unworkable back housing cover with a new one 3. Each item has been checked and in good condition before shipping 4. Completely fit and work 5. Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts

1. Bottom cover with heart rate sensor + wireless charging module replacement for Samsung Galaxy Watch Active 2 40mm SM-R830 2. Replace your broken or unworkable back housing cover with a new one 3. Each item has been checked and in good condition before shipping 4. Completely fit and work 5. Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts

1. 5G module replacement part.2. Replace your broken or unusable item with a new one.3. Each item has been checked and in good condition before shipping.4. Completely fit and work.5. Professional installation is highly recommended. We will not be responsible for any damages to your cellphone/mobile phone that you may cause during the changing of replacement parts