Brand:Transformers Form Factor:Open Ear Connectivity Technology:Open Ear Wireless Headphones Features: Officially licensed Transformers. Open Design: Embracing an open earphone design, allowing users to remain aware of their surroundings while enjoying music, providing a more natural auditory experience. Bluetooth 5.4: Utilizing advanced Bluetooth technology, eliminating the hassle of tangled wires, effortlessly connects to smartphones, tablets, or other Bluetooth devices for unrestricted music enjoyment. High-Quality Audio: Equipped with advanced audio technology, delivering clear, dynamic sound performance, immersing you in the beauty of music. Comfortable Wear: Experience a lightweight and cozy design. The ergonomic design with ultra-soft silicone cushion provides an incredibly comfortable experience. Wireless Bluetooth earbuds offer 5-6 hours of playtime on a single charge, extendable to 60 hours with the 400mAh charging case. With Type-C fast charging, they fully recharge in just 1.5 hours, making them ideal for running, work, entertainment, and fitness.