This is a hand-cranked cell phone charger. It was invented by an Indian company called IdeaForge. The company states that one minute of winding yields 3 minutes of talking time and 30 minutes standby. You can even recharge/wind while talking. The device costs $7 US. Yes, we will be testing this and seeing what midwives think! Having a mobile phone charged is an essential part of a strong emergency obstetric care referral system in many settings.