Great keyboard, barely used. Info from Obins below:

___

Programming:
We provide programming app “obins” on Apple APP Store for iOS device.

Bluetooth
This Keyboard has built-in Bluetooth 4.0 chipset, which is compatible with most Bluetooth 4.0 devices. Windows 8/10 supports Bluetooth 4.0 protocol. Just install the Bluetooth adapter, system will install the driver automatically. Most Mac devices built-in Bluetooth Module, no need of adapter. Window 7 doesn’t support Bluetooth 4.0 by itself, please download & install the corresponding driver offered below. On the condition that your computer already has BT 4.0 driver, to make sure your using is no problem, please replace it with the one offered here.
Attention: The Bluetooth sensitivity is dfferent with different devices: Android & ios> MAC & WIN10> WIN7

Specifications
- Keys Quality: 61 keys
- Main Control Chip: Dual ARM Cortex-M3 STM32L 151
- USB: Support
- Response Time: 1ms
- Hardware Interference Resistance: Support
- Case Color: Black
- Key caps: PBT keycaps
- Firmware Upgrade: App Support
- App Support: Yes
- Light Effect: RGB 16 million colors
- Pull Key Tool: Yes
- USB Connectivity Cord: Yes
- Bluetooth Adapter: Yes