Eight3's innovative 510 thread cartridge battery. We offer our batteries in four sleek colours, and include a charger, lanyard, and extra adapter in every box! With versatile type-c charging, users will never have to worry about losing their chargers and the vibrant OLED display ensures the device can be used in any environment. Product Features: 400 mAh Battery OLED Screen Type-C Charging Port Automatic Shutoff Following 5 Minute Idle Package Includes: 1x Battery 1x Type-C Cable 1x User Manuel 1x Lanyard 1x Adapter