EQ high gain: + 15dB / -15dB
scratch-resistant
Battery type: 4 *AAA” batteries (not included)
Rechargeable battery to avoid frequent battery replacement and save our environment
it will cause insufficient power
S177 3 In 1 Leather Waterproof Laptop Liner Bags, Size: 15 inches(Apricot) Wall Plates & Parts EQ high gain: + 15dB1. Material: Leather 2. Function: waterproof, wear resistant, shock resistant 3. Made of leather material, waterproof, wear resistant and delicate 4. Delicate fluff inner design to prevent scratches on the laptop 5. Magnetic buckle design, strong suction, not easy to fall off, easy to open and close 6. Uniform sewing thread, high strength and dense, not easy to crack 7. Dimensions: 13": 33 x 24. 4cm, 14": 34. 5 x 25. 1cm, 15": 38. 6 x 27. 1cm, Power