Digital music player supporting MP3 and WMA audio formats. Built-in rechargeable lithium-ion battery provides up to 10 hours of continuous playback for high-quality audio performance. Supports MP3 and WMA music files. Functions as a USB SD/TF card reader (cards not included). Sleek, compact design with premium craftsmanship. Specifications: Model: Strip MP3 Playback time: Up to 10 hours Standby time: Up to 48 hours Dimensions: 8.5 x 2.5 x 0.9 cm Weight: 17.9 g Color: Black Battery capacity: 260 mAh Compatible SD/TF card capacities: 2GB, 4GB, 8GB, 16GB, 32GB (cards not included) Operation: Button controls Interface: USB 2.0 Headphone jack: 3.5 mm Supported audio formats: MP3, WMA Built-in battery type: Rechargeable lithium-ion Package contents: 1 x MP3 Player 1 x Lanyard Note: Actual product color may vary slightly due to monitor settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 cm.