Mitel Cordless DECT Headset & Module Bundle 50005712 - Compatible with Mitel 5330, 5340, 5360 Phones - Full Accessory Kit - Ideal for Office, Call Center & Remote Work

Between the instructions and some Google skills, got this working 6 months ago, no issues so far.The biggest hurdle that you face: you must pair the headset before the cradle will charge / blink. If only someone said these things elsewhere -_-;;