Bendy: Made using copper wire that's super flexible so you can twist and bend them. Copper string lights: Get a 5M or 10M Bluetooth app-controlled copper string light! USB rechargeable: No need for batteries! App-controlled: Download 'LED LAMP' app to change the colour, speed and mode. Modes include: Static mode, jumping, breathing, flashing, gradual change and more. LEDs per string: With 50 LEDs per 5M string, or 100 LEDS per 10M string. | Smart App Controlled RGB LED Garden Lights - Copper | Wowcher