https://www.essentialpetproducts.com/SportDOG-FieldTrainer-X-Series-425S--SD-425XS_p_14159.html
SportDOG FieldTrainer X-Series 425S
SportDOG FieldTrainer X-Series 425S - SD-425XS-Designed for high-drive, more stubborn dogs by offering a higher static stimulation range than the SD-4
x seriessportdog
https://www.shootersjax.com/product/305675/sportdog-brand-fieldtrainer-425x
SportDOG Brand FieldTrainer 425X
sportdog brand