The bluetooth headphone is a great tool for online learning and enjoying music. It have high-fidelity sound quality, which is important for enjoying music and providing an aural feast for you or your child Features: Support TF card playback, support hands-free calls It can be used for talking up to 6 hours with a charge of 2 hours Three connection methods: TF card, Bluetooth, and wire, can meet your different requirements Foldable and length adjustable Support volume adjustment and song switching Perfect for online courses, classes, movies, etc. Specifications: Material: ABS Colour: Yellow Package Size: 17 x 11 x 7 cm Bluetooth Version: 5.0 Bluetooth Transmission Distance: 10m Audio Cable Plug Type: 3.5mm (Audio cable is not include) TF Card: Support (Not included) Bluetooth Frequency: 2.401GHz - 2.480GHz FN Frequency: 87.5-108MHZ Battery Type: Lithium battery Battery Capacity: 150 mAh Package Content: 1 x Bluetooth Headphones 1 x Charging Cable 1 x User Manual Please Note: Due to manual measurement, there might be a tolerance in the product size. Due to the light and screen setting difference, the item's color may be slightly different from the pictures.