Meet the AURSINC WiFi Deauther Wristband: a wearable ESP8266 dev board ready for your networking needs. It has an OLED display and can work as an attack/control/test tool. It has a 600mAh battery that lasts up to 7 hours.
The device has a 1.3″ OLED display and a 3-way slide switch. You can get it for under $50 at this time.