So you would like building your own wearable devices? The AURSINC WiFi Deauther Wristband is worth a look. It is an ESP8266 Development Board with an OLED display and 3-way slide switch. It has a 600mAh battery that lasts up to 7 hours.
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This dev board ships with ESP8266 Deauther software installed. 2 LEDs are available to show battery charging status. This is an attack/control/test tool.
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