1. Standard 3.0 Bluetooth solution 2. Effective distance 10 meters 3. Standby time: 100 days 4. Continuous working time: 70 hours 5. Charging time: 4-5 hours 6. Lithium battery capacity: 200mAh 7. Lithium battery life: 3 years 8. Button life: 500 million times 9. With elastic band, can put pen 10. Available colors: black, gold, rose gold
