ONLY SUITABLE FOR Noise Twist / ColorFit Quad Call / Halo / ColorFit Pro 4 / Pro 4 Max / Pro 4 Alpha / Pulse Go Buzz / ColorFit Pulse 2 Max / ColorFit Pro 3 / ColorFit Pulse / ColorFit Pulse Grand / ColorFit Ultra / ColorFit Ultra 3 / ColorFit Ultra SE / ColorFit Ultra2 Buzz / Pulse 3 / ColorFit Ultra Buzz / ColorFit Pulse Buzz / ColorFit Pro 3 Alpha / Assist / ColorFit Vision 2 / ColorFit Vision Buzz / ColorFit Vision 2 Buzz / ColorFit Ultra2 LE / ColorFit Victor smartwatches. ONLY SUITABLE FOR Noise ColorFit Grande / ColorFit Pro 2/Oxy / ColorFit Beat / ColorFit Vision / ColorFit Caliber / ColorFit Caliber Go / ColorFit Caliber 2 / Caliber 2 Buzz / ColorFit Brio / Evolve3 / X-FIT 2, NoiseFit Active / NoiseFit Agile / ColorFit Nav/Nav+ smartwatches. Mini and durable: Charge your device more securely when connected to USB power source on PC, Mac, Laptop or notebook and mobile phone. Good replacement, make charging more convenient wherever in home, office or travel. Reinforced Material and Design for durable and long lasting usage