For Smart Phones & iPad & Laptop & Notebook & MP3 or Other Audio Devices, Maximum SD Card Storage: 32GB

1. Sports headphone for sports enthusiast. 2. Equipped with one Micro SD card slot, support Micro SD card up to 32GB. 3. Life waterproof level, adots waterproof technology to bring wonderful waterproof and sweatproof effect. 4. Fashion color, lightweight and comfortable, make your sports more relaxed. 5. Fast connecting speed, great sound insulation effect. 6. Compatible with most of android and IOS smartphones, such as: Apple, Samsung, Xiaomi, Huawei, tablets and other audio devices. 7. The battery is included.Specification: General Model 507 Frequency Response 20Hz-20KHz External Memory Micro SD Card up to 32GB(not included) Battery Battery Types AAA Charging Time 30minutes Dimensions & Weight Item Size 14 x 12 x 2 cm Item Weight 27 g Package Include Package Contents 1 x Headset 1 x Battery Package Weight One Package Weight 0.11kgs / 0.24lb One Package Size 19cm * 18cm * 5.5cm / 7.48inch * 7.09inch * 2.17inch Qty per Carton 50 Carton Weight 7.50kgs / 16.53lb Carton Size 40cm * 36cm * 35cm / 15.75inch * 14.17inch * 13.78inch Loading Container 20GP: 529 cartons * 50 pcs = 26450 pcs40HQ: 1228 cartons * 50 pcs = 61400 pcs