Features: Small size, light weight, low insertion loss, the center frequency is 868M Both sides are gold-plated SMA connectors (one side is sma female head--external thread inner hole; the other side is sma male head-inner thread inner needle), double-sided circuit board design, high mechanical strength and stable electrical performance. It has good pass-band ripple coefficient and out-of-band rejection. Unique shielding design, beautiful and practical. Imported SMD components with stable performance. Package Includes: 1 x Bandpass Filter Specifications: Model: BPF-870Mhz Bandwidth 867-869MHz. Maximum Withstand Power : does not exceed 20mW!! Size:approx 35mmx7mmx6.5mm/1.38x0.27x0.25in Weight: 5.42g Interface: SMA-M, SMA-F note: Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 0-2cm.