Can a player sync to any Android device?

Players can only sync to devices rated compatible with Bluetooth 4.0, which supports the Bluetooth Low Energy protocol. This is a very common protocol used by virtually every wearable that syncs with/connects to a mobile device.

Unfortunately, some Android devices do not support Bluetooth 4.0, and therefore they will not be able to sync with Sqord Boosters. The device should specifically say it supports Bluetooth 4.0 or higher. If it says only, "Bluetooth" it's a good indication that it may not support Bluetooth 4.0 or BLE.