Cell Phone Radiation Protection Cell Phone Signal Shielding Anti-Positioning Cell Phone Bag(Black)

1. Material: Nano 2. The inner size can be installed: 18*9CM 3. Signal attenuation strength: 90dB 4. Signal shielding efficiency: 100% 5. Size: 20*11*2cm 6. Can be installed mobile phone size: 5.5 inches or less